Question

32 men can work for 6 hours daily and can complete a work in 10 days. How many men are needed to finish this work in 12 days by working 10 hours per day?

A. 15

B. 16

C. 17

D. 18

1. C
2. B
3. A
4. D

Answer 1

Correct Answer - Option 2 : B

Given:

M₁ = 32 men

H₁ = 6 hours

D₁ = 10 days

H2 = 10 hours

D2 = 12 days

Here, M is the number of men, H is time in hours and D is the number of days.

Formula used:

M₁ × D₁ × H₁ = M2 × D2 × H2 

Calculation:

32 × 10 × 6 = M₂ × 12 × 10

⇒ M₂ = 1920/120

⇒ M₂ = 16

∴ 16 Men are needed to finish the work in 12 days by working 10 hours per day.