Question

Twelve persons can construct a 320 m long wall in 32 days working 8 hours a day. In how many days can 40 persons construct a 250 m long wall working 10 hours a day?
1. 10
2. 9
3. 8
4. 6

Answer 1

Correct Answer - Option 4 : 6

Given:

Twelve persons can construct a 320 m long wall in 32 days working 8 hours a day

Concept:

M₁D₁T₁/W₁ = M₂D₂T₂/W₂, Where M = Men, D = Days, T = Time, W = Work

Calculation:

⇒ (12 × 32 × 8)/320 = (40 × D₂ × 10)/250

⇒ D₂ = 6

∴ The required result will be 6 days.