Question

40 mechanics can repair a bike in 56 days. In how many days 32 mechanics will do the same work?

• A. 60 days
• B. 56 days
• C. 80 days
• D. 70 days

Answer 1

Answer:

D. 70 days

Solution: GIVEN: Number of day taken by 40 mechanics = 56 days Time is inversely proportional to efficiency Formula used: Men × Day = Total Work M1 × D1 = M2 × D2 CALCULATION: Time taken by 40 mechanics = 56 days So, 1 mechanic will take = 56 × 40 days ∴ 32 mechanic will take ⇒ (56 × 40)/32 ⇒ 70 days ∴ 32 mechanics will do the same work in 70 days.