Question

If 8 men working 5 hours a day complete a job in 12 days, then 15 men working 4 hours a day will finish the job in how many days? Assume that all men work at same efficiency.
1. 15 days
2. 42 days
3. 12 days
4. 8 days

Answer 1

Correct Answer - Option 4 : 8 days

Given:

 8 men working 5 hours a day complete a job in 12 days

Calculation:

⇒ M₁D₁T₁ = M₂D₂T₂

⇒ 8 × 12 × 5 = 15 × D₂ × 4

⇒ D₂ = 8

∴ The required result will be 8.