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A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work was done by A in :
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- 5 days
- 6 days
- 10 days
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10 1 days 2
Correct Option: C
Work done by (B + C) in 3 days.
| = 3 × |  | + |  | 9 | 12 |
| = | + | = | = | |||||
| 3 | 4 | 12 | 12 |
| Remaining work = 1 - | = | |||
| 12 | 12 |
This part of work is done by A alone.
| Now, | part of work is done by A in 1 day | 24 |
| ∴ | part of work will be done by | 12 |
| A in = 24 × | = 10 days. | 12 |
