Question

A can do a piece of work in 10 days while B alone can do it in 15 days In how many days both can compete work​

Answer 1

Step-by-step explanation:

10 days. 15 days

30 = total work

efficiency of A = 30/10

= 3

efficiency of B = 30/15

= 2

{A+B }work together = 30/5

= 6days