X can complete a piece of work in 30 h and

Y can complete it in 24 h. In how many

hours will it be completed if they work

together?

# X can complete a piece of work in 30 h and

### 1 thought on “X can complete a piece of work in 30 h and<br />Y can complete it in 24 h. In how many<br />hours will it be completed if they wor”

### Leave a Comment

You must be logged in to post a comment.

xcancompleteaworkin30hrx’sworkperhour=1/30Ycompletesaworkin24hrSoworkdoneinonehour=1/24Now,workdonebybothin1hour1/30+1/24=4+5120=9/120=3/40Letzbethetimetakentocompletetheworktherefore,3/40×z=13z=40z=40/3=13.33hr