Simultaneously 12951

They have a swimming pool in the schoolyard. The smaller pump fills in 7.5 hours, the medium in 5 hours, and the large in 3 hours. How many hours will it take if all three are turned on simultaneously?

Correct answer:

t =  1.5 h

Step-by-step explanation:


t·(1/7.5+1/5+1/3)=1

10t = 15


t = 15/10 = 1.5

t = 3/2 = 1.5

Our simple equation calculator calculates it.



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