X can complete a certain work in the same time in which Y and Z together can do it. If X and Y together can finish it in 10 days and Z alone in 15 days, then Y alone can do it in?

1. X can complete a certain work in the same time in which Y and Z together can do it. If X and Y together can finish it in 10 days and Z alone in 15 days, then Y alone can do it in?

[Officer (Cash) Freedom Fighter 2019[MCQ] : 2019]

1. 22 days

2. 18 days

3. 20 days

4. 25 days

Answer

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