Question

6. A can do a piece of work in 20 days and B can do it in 12 days. B worked at it for 9 days. In how
many days A alone can finish the remaining work​

Answer 1

In 15 days

By cross multiplication

Answer 2

Answer:

5 days

9 days work of B is 9×5 units = 45 units

Work left = 60−45= 15 units

Now, A can finish remaining

153=5 days