- 40%
- 45%
- 55%
- 44%
- 56%
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Answer: C official key
Approach: Split into boys/girls on a base of 100 students.
Solution:
Students = 100 → boys 40, girls 60.
Girls not reading Hindi = 20% of 60 = 12 → girls reading Hindi = 48.
Total reading Hindi = 70 → boys reading Hindi = 70 − 48 = 22.
% of boys reading Hindi = 22/40 × 100 = 55%.
Cetking shortcut: Take 100 students and fill a 2×2 table (boys/girls × Hindi/not).
Answer: C







