X can do a piece of work in 10 days. He works at it for 4 days and then Y finishes it in 9 days. In how many days can X and Y together finish the work?

Ques:- X can do a piece of work in 10 days. He works at it for 4 days and then Y finishes it in 9 days. In how many days can X and Y together finish the work?

0 9534