Question

A can finish a work in 15 days and B can finish it in 60 days. B worked for 10 days and left the on many days A alone can finish the remaining work?
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Answer 1

Answer:

B worked for 10 days. So, remaining 5 days work is pending. This is 5/15 = 1/3rd of work.

a can finish the work in 18 days. So, 1/3rd of work can be done in 18 × 1/3 = 6 days.