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A is twice as good a workman as B and B is twice as good a workman as C. If A and B can together finish a piece of work in 4 days, then C can do it by himself in
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- 6 days
- 8 days
- 24 days
- 12 days
Correct Option: C
Using basics of Rule 2,
According to the question,
If A takes x days to complete the work, B will take 2x days and C will take 4x days,
Now, (A + B)'s 1 day’s work
| = | 4 |
| = | + | = | ||||
| x | 2x | 4 |
| ⇒ | = | |||
| 2x | 4 |
⇒ 2x = 12 ⇒ x = 6
∴ C will complete the work in 4x
i.e. 24 days.
