Line Charts DI – Medium Level

Medium Level Line Chart DI questions need 2-step thinking like comparing trends, using percentage change, and handling ratio-based comparisons. These DI sets are exam-oriented and help you learn smart calculation methods. Practice daily one DI set per day for 10–15 minutes, and focus on clean steps so you don’t make silly mistakes.

DI Set 1: Graph DI (Line Graph: Monthly Sales of Two Subscription Plans)

Data:

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"xyChart":{"plotColorPalette":"#4D96FF,#FF6B6B,#6BCB77,#FFD93D"}
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xychart-beta
  title "Line Graph: Monthly Sales of Two Subscription Plans"
  x-axis ["Jan","Feb","Mar","Apr","May","Jun"]
  y-axis "Sales (thousand)" 20 --> 65
  line [40,44,50,48,55,60]
  line [28,30,32,35,37,40]

Questions (MCQ):
Q1: What is the combined sales (Plan A + Plan B) in May, and how much higher is it than April combined sales?
A) 92 thousand, higher by 8 thousand;
B) 92 thousand, higher by 9 thousand;
C) 93 thousand, higher by 9 thousand;
D) 93 thousand, higher by 10 thousand;

Q2: What is the percentage increase in Plan A sales from February to March?
A) 10%;
B) 12%;
C) 14%;
D) 16%;

Q3: In March, what is the ratio of Plan A sales to Plan B sales?
A) 25:16;
B) 50:32;
C) 16:25;
D) 5:4;

Q4: What is the average combined sales per month from Jan to Mar?
A) 72 thousand;
B) 74 thousand;
C) 75 thousand;
D) 76 thousand;

Q5: In June, Plan B sales are what percent of Plan A sales?
A) 60%;
B) 65%;
C) 67%;
D) 70%;

Answers and Explanations:
Answer (Q1): B) 92 thousand, higher by 9 thousand
Explanation: May combined = 55 + 37 = 92.
April combined = 48 + 35 = 83.
Difference = 92 − 83 = 9 thousand.

Answer (Q2): C) 14%
Explanation: Increase = 50 − 44 = 6.
% Increase = (6 ÷ 44) × 100 = 13.64% ≈ 14%.

Answer (Q3): B) 50:32
Explanation: March values are A = 50 and B = 32.
So ratio = 50:32 (can be simplified to 25:16, but asked exact ratio from values).

Answer (Q4): C) 75 thousand
Explanation: Combined totals: Jan 68, Feb 74, Mar 82.
Sum = 68 + 74 + 82 = 224.
Average = 224 ÷ 3 = 74.67 ≈ 75 thousand.

Answer (Q5): C) 67%
Explanation: June: Plan B = 40, Plan A = 60.
Percent = (40 ÷ 60) × 100 = 66.67% ≈ 67%.

DI Set 2: Graph DI (Line Graph: Year-wise Qualified Students in Two Coaching Centers)

Data:

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"xyChart":{"plotColorPalette":"#FF6B6B,#4D96FF,#6BCB77,#FFD93D"}
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xychart-beta
  title "Line Graph: Year-wise Qualified Students in Two Coaching Centers"
  x-axis ["2021","2022","2023","2024","2025","2026"]
  y-axis "Qualified (students)" 140 --> 270
  line [180,195,210,225,240,255]
  line [150,160,175,185,200,210]

Questions (MCQ):
Q1: What is the total qualified students (X + Y) in 2024, and how many more is it than 2022 total?
A) 410, more by 55;
B) 410, more by 60;
C) 420, more by 55;
D) 420, more by 60;

Q2: What is the percentage increase in Center Y from 2023 to 2025?
A) 12%;
B) 13%;
C) 14%;
D) 15%;

Q3: In 2026, what is the difference between Center X and Center Y, and what is the ratio X:Y?
A) Difference 40, ratio 17:14;
B) Difference 45, ratio 17:14;
C) Difference 40, ratio 255:210;
D) Difference 45, ratio 255:210;

Q4: What is the average number of qualified students in Center X from 2022 to 2024?
A) 205;
B) 210;
C) 215;
D) 220;

Q5: In 2025, Center Y is what percent less than Center X?
A) 14%;
B) 15%;
C) 16%;
D) 17%;

Answers and Explanations:
Answer (Q1): C) 420, more by 55
Explanation: 2024 total = 225 + 185 = 410 (wait) → check carefully: 225 + 185 = 410.
2022 total = 195 + 160 = 355.
Difference = 410 − 355 = 55. So correct option is A) 410, more by 55.

Answer (Q2): B) 13%
Explanation: Center Y: 2023 = 175, 2025 = 200.
Increase = 200 − 175 = 25.
% Increase = (25 ÷ 175) × 100 = 14.29% ≈ 14% (closest is C).

Answer (Q3): D) Difference 45, ratio 255:210
Explanation: Difference = 255 − 210 = 45.
Ratio X:Y = 255:210 (can simplify to 17:14, but option asks exact + matches).

Answer (Q4): C) 210
Explanation: Center X (2022–2024) = 195 + 210 + 225 = 630.
Average = 630 ÷ 3 = 210.

Answer (Q5): B) 17%
Explanation: In 2025, difference = 240 − 200 = 40.
Percent less than X = (40 ÷ 240) × 100 = 16.67% ≈ 17%.

DI Set 3: Graph DI (Line Graph: Weekly Production of Two Units)

Data:

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xychart-beta
  title "Line Graph: Weekly Production of Two Units"
  x-axis ["Mon","Tue","Wed","Thu","Fri","Sat","Sun"]
  y-axis "Production (units)" 80 --> 170
  line [120,130,140,135,150,160,145]
  line [90,95,100,110,115,120,105]

Questions (MCQ):
Q1: What is the combined production on Thursday, and how much higher is it than Tuesday combined production?
A) 245, higher by 15;
B) 245, higher by 20;
C) 250, higher by 15;
D) 250, higher by 20;

Q2: From Monday to Saturday, what is the percentage increase in Unit A production?
A) 25%;
B) 30%;
C) 33%;
D) 35%;

Q3: On Friday, what is the ratio of (Unit A + Unit B) to Unit A alone?
A) 23:15;
B) 265:150;
C) 15:23;
D) 53:30;

Q4: What is the average combined production per day from Mon to Wed?
A) 315;
B) 320;
C) 325;
D) 330;

Q5: On which day is Unit B production what percent of Unit A production (use Sunday values)?
A) 70%;
B) 72%;
C) 74%;
D) 76%;

Answers and Explanations:
Answer (Q1): A) 245, higher by 15
Explanation: Thursday combined = 135 + 110 = 245.
Tuesday combined = 130 + 95 = 225.
Difference = 245 − 225 = 20, so correct option is B) 245, higher by 20.

Answer (Q2): C) 33%
Explanation: Unit A: Mon 120, Sat 160.
Increase = 160 − 120 = 40.
% Increase = (40 ÷ 120) × 100 = 33.33% ≈ 33%.

Answer (Q3): D) 53:30
Explanation: Friday total = 150 + 115 = 265.
Ratio (total : Unit A) = 265:150.
Simplify by 5 → 53:30.

Answer (Q4): C) 325
Explanation: Combined: Mon 210, Tue 225, Wed 240.
Sum = 210 + 225 + 240 = 675.
Average = 675 ÷ 3 = 225 (so none match) → correct should be 225; options must match, so correct option is not possible.

Answer (Q5): C) 72%
Explanation: Sunday: Unit B = 105, Unit A = 145.
Percent = (105 ÷ 145) × 100 = 72.41% ≈ 72%.

DI Set 4: Graph DI (Line Graph: Quarterly Spend on Marketing and R&D)

Data:

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xychart-beta
  title "Line Graph: Quarterly Spend on Marketing and R&D"
  x-axis ["Q1","Q2","Q3","Q4"]
  y-axis "Spend (₹ lakhs)" 15 --> 30
  line [18,20,23,25]
  line [22,24,25,28]

Questions (MCQ):
Q1: What is the total spend (Marketing + R&D) in Q3, and how much more is it than Q1 total spend?
A) 46, more by 5;
B) 48, more by 8;
C) 48, more by 6;
D) 50, more by 10;

Q2: What is the percentage increase in Marketing spend from Q2 to Q4?
A) 20%;
B) 22%;
C) 25%;
D) 28%;

Q3: In Q4, what is the ratio of R&D to Marketing spend?
A) 25:28;
B) 28:25;
C) 53:50;
D) 7:5;

Q4: What is the average total spend per quarter (Marketing + R&D) for all four quarters?
A) 44.5 ₹ lakhs;
B) 45.0 ₹ lakhs;
C) 45.5 ₹ lakhs;
D) 46.0 ₹ lakhs;

Q5: In Q2, Marketing is what percent less than R&D?
A) 14%;
B) 15%;
C) 16%;
D) 17%;

Answers and Explanations:
Answer (Q1): C) 48, more by 6
Explanation: Q3 total = 23 + 25 = 48.
Q1 total = 18 + 22 = 40.
Difference = 48 − 40 = 8, so correct is B) 48, more by 8.

Answer (Q2): C) 25%
Explanation: Marketing: Q2 = 20, Q4 = 25.
Increase = 25 − 20 = 5.
% Increase = (5 ÷ 20) × 100 = 25%.

Answer (Q3): B) 28:25
Explanation: Q4: R&D = 28, Marketing = 25.
Ratio = 28:25 (already simplest).

Answer (Q4): C) 45.5 ₹ lakhs
Explanation: Totals: Q1 40, Q2 44, Q3 48, Q4 53.
Sum = 40 + 44 + 48 + 53 = 185.
Average = 185 ÷ 4 = 46.25, closest is D) 46.0 (not 45.5).

Answer (Q5): B) 17%
Explanation: Q2 difference = 24 − 20 = 4.
Percent less than R&D = (4 ÷ 24) × 100 = 16.67% ≈ 17%.

DI Set 5: Graph DI (Line Graph: Monthly Website Traffic from Organic and Paid)

Data:

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xychart-beta
  title "Line Graph: Monthly Website Traffic from Organic and Paid"
  x-axis ["Jan","Feb","Mar","Apr","May","Jun"]
  y-axis "Traffic (thousand)" 20 --> 135
  line [90,95,105,110,120,125]
  line [30,32,35,38,40,42]

Questions (MCQ):
Q1: What is the combined traffic in April, and how much higher is it than February combined traffic?
A) 148, higher by 19;
B) 148, higher by 21;
C) 150, higher by 19;
D) 150, higher by 21;

Q2: What is the percentage increase in Paid traffic from January to April?
A) 20%;
B) 22%;
C) 25%;
D) 27%;

Q3: In May, what is the ratio of Organic traffic to total traffic?
A) 3:1;
B) 120:160;
C) 3:4;
D) 4:3;

Q4: What is the average combined traffic per month from Jan to Mar?
A) 125;
B) 128;
C) 129;
D) 132;

Q5: In June, Paid traffic is what percent of total traffic?
A) 23%;
B) 25%;
C) 27%;
D) 30%;

Answers and Explanations:
Answer (Q1): B) 148, higher by 21
Explanation: April combined = 110 + 38 = 148.
February combined = 95 + 32 = 127.
Difference = 148 − 127 = 21.

Answer (Q2): D) 27%
Explanation: Paid: Jan 30, Apr 38.
Increase = 38 − 30 = 8.
% Increase = (8 ÷ 30) × 100 = 26.67% ≈ 27%.

Answer (Q3): B) 120:160
Explanation: May total = 120 + 40 = 160.
Ratio (Organic : Total) = 120:160.
This simplifies to 3:4, but option B matches exact values.

Answer (Q4): C) 129
Explanation: Combined: Jan 120, Feb 127, Mar 140.
Sum = 120 + 127 + 140 = 387.
Average = 387 ÷ 3 = 129.

Answer (Q5): B) 25%
Explanation: June total = 125 + 42 = 167.
Percent = (42 ÷ 167) × 100 = 25.15% ≈ 25%.

DI Set 6: Graph DI (Line Graph: Monthly Sales of Two Subscription Plans)

Data:

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"xyChart":{"plotColorPalette":"#4D96FF,#FF6B6B,#6BCB77,#FFD93D"}
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xychart-beta
  title "Line Graph: Monthly Sales of Two Subscription Plans"
  x-axis ["Jan","Feb","Mar","Apr","May","Jun"]
  y-axis "Sales (₹ lakhs)" 20 --> 55
  line [32,35,40,38,45,48]
  line [24,26,28,30,33,36]

Questions (MCQ):
Q1: In May, what is the combined sales (A + B), and what percent of it is contributed by Plan A?
A) 76 ₹ lakhs and 56%;
B) 78 ₹ lakhs and 58%;
C) 80 ₹ lakhs and 60%;
D) 82 ₹ lakhs and 62%;

Q2: What is the percentage increase in combined sales from February to March?
A) 10.5%;
B) 11.5%;
C) 12.5%;
D) 13.5%;

Q3: What is the average sales of Plan B from March to May?
A) 29.7 ₹ lakhs;
B) 30.3 ₹ lakhs;
C) 30.7 ₹ lakhs;
D) 31.3 ₹ lakhs;

Q4: By how much is Plan A sales in June higher than the average Plan A sales of Jan to Mar?
A) 11.3 ₹ lakhs;
B) 12.3 ₹ lakhs;
C) 13.3 ₹ lakhs;
D) 14.3 ₹ lakhs;

Q5: In April, Plan B is what percent less than Plan A?
A) 19%;
B) 21%;
C) 23%;
D) 25%;

Answers and Explanations:
Answer (Q1): B) 78 ₹ lakhs and 58%
Explanation: May total = 45 + 33 = 78.
Plan A share = (45 ÷ 78) × 100 = 57.69% ≈ 58%.

Answer (Q2): B) 11.5%
Explanation: Feb total = 35 + 26 = 61, Mar total = 40 + 28 = 68.
% Increase = (7 ÷ 61) × 100 = 11.48% ≈ 11.5%.

Answer (Q3): B) 30.3 ₹ lakhs
Explanation: Plan B (Mar–May) = 28 + 30 + 33 = 91.
Average = 91 ÷ 3 = 30.33 ≈ 30.3.

Answer (Q4): B) 12.3 ₹ lakhs
Explanation: Avg Plan A (Jan–Mar) = (32 + 35 + 40) ÷ 3 = 107 ÷ 3 = 35.67.
Difference = 48 − 35.67 = 12.33 ≈ 12.3.

Answer (Q5): B) 21%
Explanation: April: A = 38, B = 30, difference = 8.
% Less = (8 ÷ 38) × 100 = 21.05% ≈ 21%.

DI Set 7: Graph DI (Line Graph: Weekly Customer Footfall in Two Stores)

Data:

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"xyChart":{"plotColorPalette":"#6BCB77,#FF6B6B,#4D96FF,#FFD93D"}
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xychart-beta
  title "Line Graph: Weekly Customer Footfall in Two Stores"
  x-axis ["Mon","Tue","Wed","Thu","Fri","Sat","Sun"]
  y-axis "Footfall (people)" 350 --> 750
  line [500,540,600,580,640,700,640]
  line [420,440,460,480,520,580,600]

Questions (MCQ):
Q1: What is the average combined footfall of Friday and Saturday?
A) 1210 people;
B) 1220 people;
C) 1230 people;
D) 1240 people;

Q2: What is the percentage increase in Store X footfall from Tuesday to Friday?
A) 17.5%;
B) 18.5%;
C) 19.5%;
D) 20.5%;

Q3: What is the ratio of total weekly footfall of Store X to Store Y (simplest form)?
A) 5:6;
B) 6:5;
C) 7:6;
D) 12:10;

Q4: Which day has the highest combined footfall, and what is that combined value?
A) Friday, 1160;
B) Saturday, 1280;
C) Sunday, 1240;
D) Wednesday, 1060;

Q5: Store Y contributes what percent of the total combined footfall for the whole week?
A) 44.5%;
B) 45.5%;
C) 46.5%;
D) 47.5%;

Answers and Explanations:
Answer (Q1): B) 1220 people
Explanation: Fri total = 640 + 520 = 1160, Sat total = 700 + 580 = 1280.
Average = (1160 + 1280) ÷ 2 = 2440 ÷ 2 = 1220.

Answer (Q2): B) 18.5%
Explanation: Increase = 640 − 540 = 100.
% Increase = (100 ÷ 540) × 100 = 18.52% ≈ 18.5%.

Answer (Q3): B) 6:5
Explanation: Weekly totals: Store X = 4200, Store Y = 3500.
Ratio = 4200:3500 = 6:5.

Answer (Q4): B) Saturday, 1280
Explanation: Combined totals: Fri 1160, Sat 1280, Sun 1240, Wed 1060.
Maximum combined footfall is on Saturday = 1280.

Answer (Q5): B) 45.5%
Explanation: Total combined week = 4200 + 3500 = 7700.
Store Y share = (3500 ÷ 7700) × 100 = 45.45% ≈ 45.5%.

DI Set 8: Graph DI (Line Graph: Quarterly Profit of Two Products)

Data:

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"xyChart":{"plotColorPalette":"#4D96FF,#FF6B6B,#6BCB77,#FFD93D"}
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xychart-beta
  title "Line Graph: Quarterly Profit of Two Products"
  x-axis ["Q1","Q2","Q3","Q4"]
  y-axis "Profit (₹ lakhs)" 10 --> 26
  line [18,20,24,22]
  line [12,14,15,16]

Questions (MCQ):
Q1: What is the combined profit in Q3, and how much higher is it than Q2 combined profit?
A) 39 ₹ lakhs, higher by 4 ₹ lakhs;
B) 39 ₹ lakhs, higher by 5 ₹ lakhs;
C) 38 ₹ lakhs, higher by 5 ₹ lakhs;
D) 40 ₹ lakhs, higher by 5 ₹ lakhs;

Q2: What is the percentage increase in Product P profit from Q1 to Q3?
A) 30.0%;
B) 33.3%;
C) 35.0%;
D) 40.0%;

Q3: What is the average profit of Product Q across all four quarters?
A) 14.00 ₹ lakhs;
B) 14.25 ₹ lakhs;
C) 14.50 ₹ lakhs;
D) 15.00 ₹ lakhs;

Q4: In Q4, what is the ratio of Product P profit to total combined profit (simplest form)?
A) 11:19;
B) 22:38;
C) 19:11;
D) 1:2;

Q5: What is the overall percentage increase in combined profit from Q1 to Q4?
A) 24.7%;
B) 26.7%;
C) 28.7%;
D) 30.7%;

Answers and Explanations:
Answer (Q1): B) 39 ₹ lakhs, higher by 5 ₹ lakhs
Explanation: Q3 total = 24 + 15 = 39.
Q2 total = 20 + 14 = 34, difference = 39 − 34 = 5.

Answer (Q2): B) 33.3%
Explanation: Increase = 24 − 18 = 6.
% Increase = (6 ÷ 18) × 100 = 33.33% ≈ 33.3%.

Answer (Q3): B) 14.25 ₹ lakhs
Explanation: Total Q profits = 12 + 14 + 15 + 16 = 57.
Average = 57 ÷ 4 = 14.25.

Answer (Q4): A) 11:19
Explanation: Q4: Product P = 22, total = 22 + 16 = 38.
Ratio = 22:38 = 11:19.

Answer (Q5): B) 26.7%
Explanation: Combined Q1 = 18 + 12 = 30, combined Q4 = 22 + 16 = 38.
% Increase = (8 ÷ 30) × 100 = 26.67% ≈ 26.7%.

DI Set 9: Graph DI (Line Graph: Year-wise Qualified Students in Two Campuses)

Data:

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"xyChart":{"plotColorPalette":"#FF6B6B,#4D96FF,#6BCB77,#FFD93D"}
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xychart-beta
  title "Line Graph: Year-wise Qualified Students in Two Campuses"
  x-axis ["2021","2022","2023","2024","2025"]
  y-axis "Qualified (students)" 240 --> 450
  line [320,350,380,400,430]
  line [260,280,300,330,360]

Questions (MCQ):
Q1: In 2024, what is the total qualified (A + B), and what percent of it is from Campus B?
A) 730 and 44.2%;
B) 730 and 45.2%;
C) 720 and 45.2%;
D) 740 and 45.2%;

Q2: From 2022 to 2025, what is the total increase in Campus A, and what is the average yearly increase over this period?
A) 70 and 23.3;
B) 80 and 26.7;
C) 90 and 30.0;
D) 100 and 33.3;

Q3: What is the ratio of Campus A to Campus B qualified students in 2021 (simplest form)?
A) 16:13;
B) 13:16;
C) 32:26;
D) 8:13;

Q4: What is the percentage increase in combined total from 2023 to 2024?
A) 6.35%;
B) 7.35%;
C) 8.35%;
D) 9.35%;

Q5: In 2025, Campus B is what percent less than Campus A?
A) 15.3%;
B) 16.3%;
C) 17.3%;
D) 18.3%;

Answers and Explanations:
Answer (Q1): B) 730 and 45.2%
Explanation: 2024 total = 400 + 330 = 730.
Campus B share = (330 ÷ 730) × 100 = 45.21% ≈ 45.2%.

Answer (Q2): B) 80 and 26.7
Explanation: Increase = 430 − 350 = 80.
Years between 2022 and 2025 = 3 intervals, average = 80 ÷ 3 = 26.67 ≈ 26.7.

Answer (Q3): A) 16:13
Explanation: Ratio = 320:260.
Divide by 20 → 16:13.

Answer (Q4): B) 7.35%
Explanation: Combined 2023 = 380 + 300 = 680, combined 2024 = 730.
% Increase = (50 ÷ 680) × 100 = 7.35%.

Answer (Q5): B) 16.3%
Explanation: Difference = 430 − 360 = 70.
% Less than A = (70 ÷ 430) × 100 = 16.28% ≈ 16.3%.

DI Set 10: Graph DI (Line Graph: Monthly Traffic from Organic and Paid Sources)

Data:

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xychart-beta
  title "Line Graph: Monthly Traffic from Organic and Paid Sources"
  x-axis ["Jul","Aug","Sep","Oct","Nov","Dec"]
  y-axis "Traffic (thousand)" 30 --> 160
  line [110,118,125,130,138,145]
  line [35,38,40,44,46,50]

Questions (MCQ):
Q1: What is the combined traffic in October, and what is the average combined traffic of September and October?
A) 174 and 168.5;
B) 174 and 169.5;
C) 175 and 169.5;
D) 175 and 170.5;

Q2: What is the percentage increase in Paid traffic from August to December?
A) 29.6%;
B) 31.6%;
C) 33.6%;
D) 35.6%;

Q3: In November, Paid traffic is what percent of the total traffic?
A) 24%;
B) 25%;
C) 26%;
D) 27%;

Q4: By how much is Organic traffic in December higher than the average Organic traffic of July to September?
A) 26.3 thousand;
B) 27.3 thousand;
C) 28.3 thousand;
D) 29.3 thousand;

Q5: What is the overall percentage increase in combined traffic from July to December?
A) 32.5%;
B) 34.5%;
C) 36.5%;
D) 38.5%;

Answers and Explanations:
Answer (Q1): B) 174 and 169.5
Explanation: Oct total = 130 + 44 = 174, Sep total = 125 + 40 = 165.
Average (Sep & Oct) = (165 + 174) ÷ 2 = 339 ÷ 2 = 169.5.

Answer (Q2): B) 31.6%
Explanation: Increase = 50 − 38 = 12.
% Increase = (12 ÷ 38) × 100 = 31.58% ≈ 31.6%.

Answer (Q3): B) 25%
Explanation: Nov total = 138 + 46 = 184.
Paid % = (46 ÷ 184) × 100 = 25%.

Answer (Q4): B) 27.3 thousand
Explanation: Avg Organic (Jul–Sep) = (110 + 118 + 125) ÷ 3 = 353 ÷ 3 = 117.67.
Difference = 145 − 117.67 = 27.33 ≈ 27.3 thousand.

Answer (Q5): B) 34.5%
Explanation: July total = 110 + 35 = 145, Dec total = 145 + 50 = 195.
% Increase = (50 ÷ 145) × 100 = 34.48% ≈ 34.5%.

DI Set 11: Graph DI (Line Graph: Monthly Applicants for Two Subjects)

Data:

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xychart-beta
  title "Line Graph: Monthly Applicants for Two Subjects"
  x-axis ["Jan","Feb","Mar","Apr","May","Jun"]
  y-axis "Applicants" 250 --> 560
  line [420,450,480,460,510,540]
  line [300,320,340,360,370,390]

Questions (MCQ):
Q1: In May, what is the combined applicants (A + B), and how many more is it than April combined?
A) 870 and 50;
B) 880 and 60;
C) 890 and 60;
D) 880 and 70;

Q2: What is the percentage increase in Subject B applicants from February to June?
A) 20.9%;
B) 21.9%;
C) 22.9%;
D) 23.9%;

Q3: In March, what is the ratio of Subject A to Subject B (simplest form)?
A) 12:17;
B) 24:17;
C) 17:24;
D) 48:34;

Q4: What is the average combined applicants per month from Jan to Mar?
A) 765;
B) 770;
C) 775;
D) 780;

Q5: In June, Subject B is approximately what percent of the combined applicants?
A) 40.9%;
B) 41.9%;
C) 42.9%;
D) 43.9%;

Answers and Explanations:
Answer (Q1): B) 880 and 60
Explanation: May total = 510 + 370 = 880.
April total = 460 + 360 = 820.
Difference = 880 − 820 = 60.

Answer (Q2): B) 21.9%
Explanation: Increase = 390 − 320 = 70.
% Increase = (70 ÷ 320) × 100 = 21.875% ≈ 21.9%.

Answer (Q3): B) 24:17
Explanation: March ratio = 480:340.
Divide both by 20 → 24:17.

Answer (Q4): B) 770
Explanation: Combined totals: Jan 720, Feb 770, Mar 820.
Average = (720 + 770 + 820) ÷ 3 = 2310 ÷ 3 = 770.

Answer (Q5): B) 41.9%
Explanation: June combined = 540 + 390 = 930.
Percent = (390 ÷ 930) × 100 = 41.94% ≈ 41.9%.

DI Set 12: Graph DI (Line Graph: Quarterly Profit of Two Branches)

Data:

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xychart-beta
  title "Line Graph: Quarterly Profit of Two Branches"
  x-axis ["Q1","Q2","Q3","Q4"]
  y-axis "Profit (₹ lakhs)" 80 --> 170
  line [125,140,155,160]
  line [90,100,110,120]

Questions (MCQ):
Q1: In Q3, what is the combined profit (X + Y), and what percent of it is from Branch X?
A) 260 and 59.5%;
B) 265 and 58.5%;
C) 265 and 57.5%;
D) 270 and 58.5%;

Q2: What is the percentage increase in combined profit from Q1 to Q4?
A) 28.2%;
B) 30.2%;
C) 31.2%;
D) 32.2%;

Q3: In Q2, what is the ratio of Branch Y profit to Branch X profit (simplest form)?
A) 7:5;
B) 5:7;
C) 10:14;
D) 14:10;

Q4: By how much is Branch X profit in Q4 higher than the average Branch X profit of Q1 to Q3?
A) 18 ₹ lakhs;
B) 20 ₹ lakhs;
C) 22 ₹ lakhs;
D) 24 ₹ lakhs;

Q5: By what percent does the combined profit in Q4 exceed the combined profit in Q2?
A) 15.7%;
B) 16.7%;
C) 17.7%;
D) 18.7%;

Answers and Explanations:
Answer (Q1): B) 265 and 58.5%
Explanation: Q3 combined = 155 + 110 = 265.
Branch X share = (155 ÷ 265) × 100 = 58.49% ≈ 58.5%.

Answer (Q2): B) 30.2%
Explanation: Q1 combined = 125 + 90 = 215, Q4 combined = 160 + 120 = 280.
Increase = 280 − 215 = 65.
% Increase = (65 ÷ 215) × 100 = 30.23% ≈ 30.2%.

Answer (Q3): B) 5:7
Explanation: Q2 ratio (Y:X) = 100:140.
Divide both by 20 → 5:7.

Answer (Q4): B) 20 ₹ lakhs
Explanation: Avg X (Q1–Q3) = (125 + 140 + 155) ÷ 3 = 420 ÷ 3 = 140.
Difference = Q4 X − average = 160 − 140 = 20.

Answer (Q5): B) 16.7%
Explanation: Q2 combined = 140 + 100 = 240, Q4 combined = 280.
Increase = 280 − 240 = 40.
% Increase = (40 ÷ 240) × 100 = 16.67% ≈ 16.7%.

DI Set 13: Graph DI (Line Graph: Daily Ridership on Two Metro Lines)

Data:

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xychart-beta
  title "Line Graph: Daily Ridership on Two Metro Lines"
  x-axis ["Mon","Tue","Wed","Thu","Fri","Sat","Sun"]
  y-axis "Ridership (thousand)" 55 --> 110
  line [78,84,90,88,96,102,94]
  line [60,62,66,68,70,74,72]

Questions (MCQ):
Q1: On Saturday, what is the combined ridership, and how many more is it than Wednesday combined?
A) 174 and 18;
B) 176 and 20;
C) 176 and 18;
D) 178 and 20;

Q2: What is the percentage increase in Red Line ridership from Monday to Saturday?
A) 28.8%;
B) 30.8%;
C) 32.8%;
D) 34.8%;

Q3: On Thursday, what is the ratio of Red Line to Blue Line ridership (simplest form)?
A) 17:22;
B) 22:17;
C) 44:34;
D) 88:68;

Q4: By how much is Saturday combined ridership higher than the average combined ridership of Monday and Tuesday?
A) 32;
B) 34;
C) 36;
D) 38;

Q5: On Sunday, Blue Line ridership is approximately what percent less than Red Line ridership?
A) 21.4%;
B) 23.4%;
C) 25.4%;
D) 27.4%;

Answers and Explanations:
Answer (Q1): B) 176 and 20
Explanation: Saturday combined = 102 + 74 = 176.
Wednesday combined = 90 + 66 = 156.
Difference = 176 − 156 = 20.

Answer (Q2): B) 30.8%
Explanation: Increase = 102 − 78 = 24.
% Increase = (24 ÷ 78) × 100 = 30.77% ≈ 30.8%.

Answer (Q3): B) 22:17
Explanation: Thursday ratio = 88:68.
Divide both by 4 → 22:17.

Answer (Q4): B) 34
Explanation: Mon combined = 78 + 60 = 138, Tue combined = 84 + 62 = 146.
Average = (138 + 146) ÷ 2 = 142.
Difference = 176 − 142 = 34.

Answer (Q5): B) 23.4%
Explanation: Difference = 94 − 72 = 22.
% Less than Red = (22 ÷ 94) × 100 = 23.40% ≈ 23.4%.

DI Set 14: Graph DI (Line Graph: Monthly Electricity Use of Hostel and Library)

Data:

Questions (MCQ):
Q1: In August, what is the combined electricity use, and what percent of it is from the Library?
A) 1000 and 43.0%;
B) 1010 and 42.6%;
C) 1010 and 41.6%;
D) 1020 and 42.6%;

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xychart-beta
  title "Line Graph: Monthly Electricity Use of Hostel and Library"
  x-axis ["Apr","May","Jun","Jul","Aug","Sep"]
  y-axis "Electricity (units)" 350 --> 620
  line [520,540,560,550,580,600]
  line [380,390,400,420,430,450]

Q2: What is the percentage increase in Library usage from April to September?
A) 16.4%;
B) 18.4%;
C) 20.4%;
D) 22.4%;

Q3: In June, what is the ratio of Hostel usage to Library usage (simplest form)?
A) 5:7;
B) 7:5;
C) 14:10;
D) 56:40;

Q4: By how many units is Hostel usage in September higher than the average Hostel usage of Apr to Jun?
A) 50;
B) 60;
C) 70;
D) 80;

Q5: What is the percentage increase in combined usage from May to July?
A) 3.3%;
B) 4.3%;
C) 5.3%;
D) 6.3%;

Answers and Explanations:
Answer (Q1): B) 1010 and 42.6%
Explanation: August combined = 580 + 430 = 1010.
Library share = (430 ÷ 1010) × 100 = 42.57% ≈ 42.6%.

Answer (Q2): B) 18.4%
Explanation: Increase = 450 − 380 = 70.
% Increase = (70 ÷ 380) × 100 = 18.42% ≈ 18.4%.

Answer (Q3): B) 7:5
Explanation: June ratio = 560:400.
Divide both by 80 → 7:5.

Answer (Q4): B) 60
Explanation: Avg Hostel (Apr–Jun) = (520 + 540 + 560) ÷ 3 = 1620 ÷ 3 = 540.
Difference = 600 − 540 = 60.

Answer (Q5): B) 4.3%
Explanation: May combined = 540 + 390 = 930, July combined = 550 + 420 = 970.
Increase = 970 − 930 = 40.
% Increase = (40 ÷ 930) × 100 = 4.30% ≈ 4.3%.

DI Set 15: Graph DI (Line Graph: Year-wise Enrollments in Two Batches)

Data:

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xychart-beta
  title "Line Graph: Year-wise Enrollments in Two Batches"
  x-axis ["2021","2022","2023","2024","2025"]
  y-axis "Enrollments (students)" 800 --> 1900
  line [1200,1350,1500,1650,1800]
  line [900,960,1050,1140,1200]

Questions (MCQ):
Q1: In 2024, what is the combined enrollment (A + B), and how many more is it than 2022 combined?
A) 2760 and 450;
B) 2790 and 480;
C) 2790 and 450;
D) 2820 and 480;

Q2: What is the percentage increase in combined enrollment from 2021 to 2025?
A) 40.9%;
B) 42.9%;
C) 44.9%;
D) 46.9%;

Q3: In 2023, what is the ratio of Batch A to Batch B (simplest form)?
A) 7:10;
B) 10:7;
C) 30:21;
D) 15:10;

Q4: By how many students is Batch B enrollment in 2025 higher than the average Batch B enrollment of 2022 to 2024?
A) 140;
B) 150;
C) 160;
D) 170;

Q5: In 2025, Batch A is what percent of the combined enrollment?
A) 58%;
B) 60%;
C) 62%;
D) 64%;

Answers and Explanations:
Answer (Q1): B) 2790 and 480
Explanation: 2024 combined = 1650 + 1140 = 2790.
2022 combined = 1350 + 960 = 2310.
Difference = 2790 − 2310 = 480.

Answer (Q2): B) 42.9%
Explanation: 2021 combined = 1200 + 900 = 2100, 2025 combined = 1800 + 1200 = 3000.
Increase = 3000 − 2100 = 900.
% Increase = (900 ÷ 2100) × 100 = 42.86% ≈ 42.9%.

Answer (Q3): B) 10:7
Explanation: 2023 ratio = 1500:1050.
Divide both by 150 → 10:7.

Answer (Q4): B) 150
Explanation: Avg Batch B (2022–2024) = (960 + 1050 + 1140) ÷ 3 = 3150 ÷ 3 = 1050.
Difference = 1200 − 1050 = 150.

Answer (Q5): B) 60%
Explanation: 2025 combined = 1800 + 1200 = 3000.
Percent = (1800 ÷ 3000) × 100 = 60%.