Mathematics, 24.04.2020 23:22, statonglenda

Pumps A, B, and C operate at their respective constant rates. Pumps A and B, operating simultaneously, can fill a certain tank in hours; pumps A and C, operating simultaneously, can fill the tank in 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: 2

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Pumps A, B, and C operate at their respective constant rates. Pumps A and B, operating simultaneousl...