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Raj and Ram working together do a piece of work in 10 days. Raj alone can do it in 12 days. Ram alone will do the work in
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- 20 days
- 40 days
- 50 days
- 60 days
Correct Option: D
| (Raj + Ram)’s 1 day’s work = | ||
| 10 |
| Raj’s 1 day’s work = | ||
| 12 |
| ∴ Ram’s 1 day’s work = | - | 10 | 12 |
| Ram’s 1 day’s work = | = | 60 | 60 |
∴ Required time = 60 days
Second method to solve this question ,
Here , x = 12 , y = 10
| Time taken = | = 60 days | |
| 12 - 10 |
