28 pumps can empty a reservar in 8hrs.In how many hours can 42 such pu – InterviewSolution

1.	28 pumps can empty a reservar in 8hrs.In how many hours can 42 such pumps do the same work? tell correct answer by full explanation
Answer» working in 2DAYS =8×2= 16 hrMeans they can empty a tank in 16 hr .3pumps 1 hr work = 1/161pumps 1 hr work =1/3×164pumps 1HR work =4×1/3×16= 1/12Hence they will empty the tank in 1/ 12 hr

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