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If 4 men or 6 women can do a piece of work in 12 days working 7 hours a day; how many days will it take to complete a work twice as large with 10 men and 3 women working together 8 hours a day?
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- 6 days
- 7 days
- 8 days
- 10 days
Correct Option: B
Using Rule 1,
4 men ≡ 6 women
| 1 men ≡ | = | woman | ||
| 4 | 2 |
= women 10 men + 3 women
| = 10 × | + 3 = 18 woman | |
| 2 |
| ∴ | = | ||
| W1 | W2 |
| ⇒ | = | ||
| 1 | W2 |
| ⇒ D2 = | = 7 days | |
| 18 × 8 |
