The ratio of boys to girls in a class is 3:2. If 10% of boys and 15% of girls are absent, what fraction of the total students are present? MCQ with Answer and Explanation

Question

The ratio of boys to girls in a class is 3:2. If 10% of boys and 15% of girls are absent, what fraction of the total students are present?

A. 33/50

B. 22/25

C. 87/100

D. 17/25

Answer: Option B

Solution (By JKSSB Mock Tests)

Total = 5k. Present boys=0.9×3k=2.7k, girls=0.85×2k=1.7k, present=4.4k. Fraction = 4.4/5 = 44/50 = 22/25.

This question belongs to: Maths Percentage

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Allows 10% discount, still gains 8% profit. Markup % on CP:

A. 18%

B. 22%

C. 20%

D. 16%

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Correct Answer: Option C

Explanation:
CP=100, SP=108, MP=108/0.9=120, markup 20%.

This question belongs to: Maths Percentage

Question #2

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What percentage of 50 is 20?

A. 40%

B. 50%

C. 20%

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Correct Answer: Option A

Explanation:
(20 / 50) * 100 = 40%.

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Question #3

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Number 50% more than another. Smaller is what % less than larger?

A. 30%

B. 25%

C. 35%

D. 33.33%

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Correct Answer: Option D

Explanation:
Small=100, large=150, less % = (50/150)×100 = 33.33%.

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