Correct Answer - Option 2 : 16
Given:
Initial number of men = 16
Initial time is to be needed = 12
Formula used:
M1D1/W1 = M2D2/W2
Where,
M1 = Men , D1 = Days1
M2 = Men2 , D2 = Days2
W1 = Work , W2 = Work2
Calculation:
Total work = 16 × 12 = 192
Work completed = 16 × 4 = 64
Remaining work = 192 – 64 = 128
This work is to be completed in 4 days
So number of worker required = 128/4 = 32
No of more men required is 32 – 16 = 16
∴ So 16 more men is required.