Question

A and B together can be a piece of work in 12 days. B and C can do it in 20 days while C and A can do it in 15 days. In how many days can A,B,C finish it, if they all work together?

give full solution​

Answer 1

Step-by-step explanation:

In 1 dayA and B can do a 1/12 piece of work

In 1 day B and C can do a 1/20 piece 0f work

In 1 day B can alone do (1/12-1/20)piece of the work i.e.,1/30 piece of work