2018 · Q25
A work when done by 10 women is completed in 12 days. The same work can be completed in 8 days when done by 5 men. How many days will it take to complete when 6 women and 3 men are employed to perform the same job?
Elementary MathematicsTime and Work
- A12
- B10
- C8
- D5
Explanation
The job needs 10 × 12 = 120 woman-days, and also 5 × 8 = 40 man-days, so 1 man-day = 3 woman-days. Then 6 women + 3 men ≡ 6 + 9 = 15 women, taking 120/15 = 8 days, option (C).