45 men can do a job in 16 days. Six days after they started working, 30 more…
2024
45 men can do a job in 16 days. Six days after they started working, 30 more men joined them. How many days will they now take to complete the remaining work?
- A.
5½ days
- B.
7 days
- C.
5 days
- D.
6 days
Attempted by 5 students.
Show answer & explanation
Correct answer: D
Total work = 45 × 16 = 720 man-days
Work done in 6 days = 45 × 6 = 270
Remaining work = 720 − 270 = 450
Now total men = 45 + 30 = 75
Days required = 450 ÷ 75 = 6 days
Answer: 6 days