Mathematics, 06.11.2019 22:31 ninigilford

Pumps a, b, and c operate at their respective constant rates. pumps a and b, operating simultaneously, can fill a certain tank in 6/5 hours; pumps a and c, operating simultaneously, can fill the tank in 3/2 hours; and pumps b and c, operating simultaneously, can fill the tank in 2 hours. how many hours does it take pumps a, b, and c, operating simultaneously, to fill the tank.

a. 1/3
b. 1/2
c. 1/4
d. 1
e. 5/6

Answers: 3

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Pumps a, b, and c operate at their respective constant rates. pumps a and b, operating simultaneousl...