-
A contractor was engaged to construct a road in 16 days. After working for 12 days with 20 labours it was found that only 5/8 th of the road had been constructed. To complete the work in stipulated time the number of extra labours required is :
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- 18
- 10
- 12
- 16
Correct Option: D
Using Rule 1,
Remaining work
| = 1 - | = | ; | ||
| 8 | 8 |
Remaining time = 4 days
| = | ||||
| W1 | W2 |
| = | = | |||
| 5/8 | 3/8 |
| = | = | |||
| 5 | 3 |
| ⇒ 4 × 12 = | 3 |
⇒ M2 = 12 × 3 = 36
∴ Number of additional workers
= 36 – 20 = 16
