Data Interpretation – Page 13 (Advanced DI)

Ratio + Missing Values • High Difficulty • Target Time: 15 Minutes

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📊 Data Table (Total Students = 600)

Distribution across streams:

Stream	Ratio (Boys:Girls)	% of Total
Science	3 : 2	30%
Commerce	4 : 1	25%
Arts	1 : 1	20%
Others	2 : 3	25%

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 Questions

Q1. Total students in Science?

Q2. Number of boys in Commerce?

Q3. Number of girls in Arts?

Q4. Total students in Others?

Q5. Total boys in Science?

Q6. Total girls in Commerce?

Q7. Ratio of boys (Science : Arts)?

Q8. Total girls in all streams?

Q9. Difference between boys in Science and Commerce?

Q10. Percentage of boys in total students?

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✔️ Answers

Total students = 600

Science = 30% → 180
Commerce = 25% → 150
Arts = 20% → 120
Others = 25% → 150

Q1 → 180

Science (3:2 → total 5 parts)
Boys = (3/5)×180 = 108

Commerce (4:1 → total 5 parts)
Boys = (4/5)×150 = 120
Girls = (1/5)×150 = 30

Arts (1:1)
Girls = 60

Others (2:3)
Girls = (3/5)×150 = 90

Q2 → 120
Q3 → 60
Q4 → 150
Q5 → 108
Q6 → 30
Q7 → 108 : 60 = 9 : 5

Total girls = 72 + 30 + 60 + 90 = 252
Q8 → 252

Q9 → 120 − 108 = 12

Total boys = 600 − 252 = 348
Q10 → (348/600)×100 = 58%