Fifty-four men can complete a work in 48 days. After 8 days of working, thirty-six more men joined them. How many days will they now take to complete the remaining work?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 24.
Total work = 54 men × 48 days = 2592 man-days
Work done in first 8 days =54 men × 8 days = 432 man-days
Remaining work = 2592 - 432 = 2160 man-days
New workforce = 54 + 36 = 90 men
Days to finish remaining work = 2160 ÷ 90 = 24 days