P, Q and R together can complete a work in 10 days. P alone can complete the work in 30 days. In how many days Q and R together can complete the same work?

P, Q and R together can complete a work in 10 days. P alone can comple

1.	P, Q and R together can complete a work in 10 days. P alone can complete the work in 30 days. In how many days Q and R together can complete the same work?
A.	15
B.	13
C.	20
D.	18
Answer» B. 13

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P, Q and R together can complete a work in 10 days. P alone can complete the work in 30 days. In how many days Q and R together can complete the same work?

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