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A does half as much work as B in one-third of the time taken by B. If together they take 10 days to complete a work, then the time taken by B alone to do it would have been
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- 30 days
- 25 days
- 6 days
- 12 days
Correct Option: B
Using basics of Rule 2,
If B completes a work in x days,
A will complete the same in
| days. | 3 |
| ∴ | + | = | ||||
| x | 2x | 10 |
| ⇒ | = | ⇒ 2x = 50 | ||
| 2x | 10 |
⇒ x = 25 days
