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x does 1/4 of a job in 6 days. y completes rest of the job in 12 days. Then x and y could complete the job together in
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- 9 days
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9 3 days 5 -
8 1 days 8 -
7 1 days 3
Correct Option: B
Using basics of Rule 2,
| x does | work in 6 days | 4 |
∴ x does 1 work in 24 days
Similarly,
| y does | work in12 days | 4 |
| ∴ y does 1 work in | = 16 days | 3 |
(x + y)’s 1 day’s work
| + | = | = | ||||||
| 24 | 16 | 48 | 48 |
| ∴ Required time = | 5 |
| = 9 | days | 5 |
