Correct Answer: 10 days
Explanation:
(B + C)'s 1 day's work = | ❨ | 1 | + | 1 | ❩ | = | 7 | . |
9 | 12 | 36 |
Work done by B and C in 3 days = | ❨ | 7 | x 3 | ❩ | = | 7 | . |
36 | 12 |
Remaining work = | ❨ | 1 - | 7 | ❩ | = | 5 | . |
12 | 12 |
Now, | 1 | work is done by A in 1 day. |
24 |
So, | 5 | work is done by A in | ❨ | 24 x | 5 | ❩ | = 10 days. |
12 | 12 |
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