Question

A and B together can do a piece of work in 10 days but A alone can do it in 15 days. How many days would B alone take to do the same work?​

Answer 1

Step-by-step explanation:

A and B can do a piece of work together in 10 days

A can do the work alone in 15 days

so, days taken by b =10/15 = 2/3 days is the answer