2018 · Q40
Twelve (12) men work 8 hours per day and require 10 days to build a wall. If 8 men are available, how many hours per day must they work to finish the work in 8 days ?
Elementary MathematicsTime and Work
- A10 hours
- B12 hours
- C15 hours
- D18 hours
Explanation
Total work = 12 men x 8 hours x 10 days = 960 man-hours. With 8 men in 8 days: 8 x 8 x h = 960, so h = 15 hours per day. Hence option C.