2015 · Q27
If 4 men working 4 hours per day for 4 days complete 4 units of work, then how many units of work will be completed by 2 men working for 2 hours per day in 2 days ?
Elementary MathematicsTime and Work
- A2
- B1
- C1/2
- D1/8
Explanation
4 x 4 x 4 = 64 man-hours produce 4 units, so 1 unit = 16 man-hours. Then 2 x 2 x 2 = 8 man-hours give 8/16 = 1/2 unit. Hence option (c).