In a class of 40, 30% are girls. Number of boys is: MCQ with Answer and Explanation

In a class of 40, 30% are girls. Number of boys is:
A. 30
B. 26
C. 28
D. 32
Answer: Option C
Solution (By JKSSB Mock Tests)
70% of 40 = 28 boys.

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Practice More Percentage Questions

Question #1
In an exam, maximum marks 800, passing 45%. Pass marks are:
A. 360
B. 380
C. 320
D. 340

Correct Answer: Option A


Explanation:
45% of 800 = 360.

This question belongs to: Maths Percentage
Question #2
A man gave 40% of money to wife, 50% of remainder to daughter, rest to son. Son got Rs. 3000. Total money:
A. 9000
B. 10000
C. 12000
D. 15000

Correct Answer: Option B


Explanation:
Wife 40%, left 60%, daughter 50% of 60% = 30%, son gets 30% = 3000 → total 10000.

This question belongs to: Maths Percentage
Question #3
Marked 30% above CP, discount 20%. Profit %:
A. 6%
B. 4%
C. 8%
D. 5%

Correct Answer: Option B


Explanation:
CP=100, MP=130, SP=104, profit 4%.

This question belongs to: Maths Percentage