Question

28 men working 6 h a day can complete a work in 18 days. In how many days will 12 men working 7 h a day do the same work? 

1. 16
2. 26
3. 36
4. 46
5. 56

Answer 1

Correct Answer - Option 3 : 36

Given:

A work is completed in 18 days by 28 men working 6 h a day

Formula used:

(M₁ × D₁ × H₁)/W₁ = (M₂ × D₂ × H₂)/W₂

Calculation:

Let x be the number of days 12 men take to complete the work

28 × 18 × 6 = 12 × x × 7

⇒ x = (28 × 18 × 6)/(12 × 7)

⇒ x = 36

∴ The number of days 12 men take to complete the work is 36 days.