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A and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. Working together they can do the work in
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- 12 days
- 13 days
- 16 days
- 26 days
Correct Option: C
| (A + B)’s 1 day’s work = | 18 |
| (B + C)’s 1 day’s work = | 24 |
| (C + A)’s 1 day’s work = | 36 |
On adding all three,
2 (A + B + C)’s 1 day’s work
| = | + | + | = | |||||
| 18 | 24 | 36 | 72 |
| = | = | |||
| 72 | 8 |
∴ (A + B + C)’s 1 day’s work
| = | 16 |
∴ Required time = 16 days
