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A and B can do a work in 8 days. B alone can do it in 24 days. In how many days, A alone can do the same work?
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- 10 days
- 9 days
- 12 days
- 14 days
Correct Option: C
(A + B)’s 1 day’s work
| = | 8 |
B’s 1 day’s work
| = | 24 |
∴ A’s one day’s work
= (A + B)’s one day’s work – B’s one day’s work
| = | - | = | = | |||||
| 8 | 24 | 24 | 12 |
∴ A will complete the work in 12 days.
Aliter : Using Rule 4,
Here, x = 24, y = 8
Required time
| = | days | x - y |
| = | = 12 days | 24 - 8 |
