P can do a work in the same time in which Q and R together can do it. If P and Q work together, the work can be completed in 10 days. R alone needs 50 days to complete the same work. then Q alone can do it in__________?
A. 30 days
B. 25 days
C. 20 days
D. 15 days
Time and Work Mcqs · Easy · 4 weeks ago