2024 · Q29
50 men can complete a work in 40 days. They begin the work together but a batch of 5 men left after each period of 10 days. What is the time to complete the work?
Elementary MathematicsTime and Work
- A45 days
- B50 days
- C55 days
- D60 days
Explanation
The work totals 2000 man-days. Successive 10-day blocks complete 500 + 450 + 400 + 350 + 300 = 2000 man-days. Five such blocks take 50 days, option (b).