40 mechanics can repair a bike in 56 days. In how many days 32 mechanics will do the same work?
A60 days
B56 days
C80 days
D70 days
Answer:
D. 70 days
Read Explanation:
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.