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A and B together can do a piece of work in 5 days and A alone can do it in 8 days. B alone can do the same piece of work in
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11 1 days. 3 -
12 3 days. 5 -
13 1 days. 3 -
16 4 days. 5
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Correct Option: C
| (A + B)’s 1 day’s work = | ||
| 5 |
| A’s 1 day’s work = | ||
| 8 |
| ∴ B’s 1 day’s work = | - | 5 | 8 |
| B’s 1 day’s work = | = | 40 | 40 |
| ∴ B alone will complete the work in | = 13 | days | 3 | 3 |
Second method to solve this question ,
Here , x = 5 , y = 8
| Time taken by B = | ||
| 8 - 5 |
| Time taken by B = | = 13 | days | 3 | 3 |
