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One man and one woman together can complete a piece of work in 8 days. A man alone can complete the work in 10 days. In how many days can one woman alone complete the work ?
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140 days 9 - 30 days
- 40 days
- 42 days
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Correct Option: C
Work done by 1 woman in 1 day
| = | - | = | = | |||||
| 8 | 10 | 40 | 40 |
∴ One woman will complete the work in 40 days.
Aliter : Using Rule 4,
Here, x = 10 and y = 8 Woman can do work in
| = |  |  | days | x - y |
| = | | | = 40 days | 10 - 8 |
