If 15 men can complete a work in 20 days, how many men are required to complete the work in 10 days? MCQ with Answer and Explanation

If 15 men can complete a work in 20 days, how many men are required to complete the work in 10 days?

A. 32

B. 28

C. 25

D. 30

Answer: Option D

M1×D1 = M2×D2 → 15×20 = M2×10 → M2 = 30.

This question belongs to: Maths Percentage

No comments yet. Be the first to start the discussion!

Question #1 Report Error

A man saves 30% of his income. If his income increases by 20% and expenditure increases by 10%, his savings increase by:

A. 33.33%

B. 43.33%

C. 40%

D. 50%

Correct Answer: Option B

Explanation:
Income 100, exp 70, sav 30. New income 120, new exp 70×1.1=77, sav 43. Increase 13, % = (13/30)×100 = 43.33%.

This question belongs to: Maths Percentage

Question #2 Report Error

A number is increased by 15% and then decreased by 15%. If the resulting number is 782, what was the original number?

A. 800

B. 820

C. 780

D. 750

Correct Answer: Option A

Explanation:
1.15 × 0.85 = 0.9775. 0.9775x = 782 → x = 782/0.9775 = 800.

This question belongs to: Maths Percentage

Question #3 Report Error

A person buys an article at 20% discount on the marked price and sells it at the marked price. What is his profit percent?

A. 28%

B. 22%

C. 25%

D. 20%

Correct Answer: Option C

Explanation:
Let MP=100, CP=80, SP=100, profit% = (20/80)×100 = 25%.

This question belongs to: Maths Percentage