28 pumps can empty a reservoir in 18 hrs. In how many hrs can 42 such – InterviewSolution

1.	28 pumps can empty a reservoir in 18 hrs. In how many hrs can 42 such pumps can do the same work ?
Answer» 28 pumps can empty a reservoir in 18 hrs. In how many hrs can 42 such pumps can do the same work ?

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