Question

P alone can finish a piece of work ‘M’ in 9 days while Q takes 3 days to finish it alone. P, Q and R working together can finish the work ‘N’ which is 12 times of work ‘M’ in 9 days. How long will R take to finish work ‘N’, when working alone?

A 16 days
B 15 days
C 13.5 days
D 12 days
Practice Next

Relevant for Exams:

Hey! Ask a query