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P is thrice as good a workman as Q and therefore able to finish a job in 48 days less than Q. Working together, they can do it in :
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- 18 days
- 24 days
- 30 days
- 12 days
Correct Option: A
Using Rule 2,
Let time taken by P = x days
Then, time taken by Q = 3x days
∴ 3x – x = 48 ⇒ x = 24
∴ (P + Q)’s 1 day’s work
| + | = | = | ||||||
| 24 | 72 | 72 | 18 |
∴ Required time = 18 days
