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How many men need to be employed to complete a job in 5 days, if 15 men can complete 1/3 of the job in 7 days ?
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- 20
- 21
- 45
- 63
Correct Option: D
we can solve this question with the help of given formula ,
| 15 men complete | work in 7 days. | |
| 3 |
∴ Time taken in doing 1 work
= 3 × 7 = 21 days
∴ M1 D1 = M2 D2
⇒ 15 × 21 = M2 × 5
| ⇒ M2 = | = 63 days | |
| 5 |
