A tank can be filled by one pipe in four hours and by a second pipe in six hours; and when it is full, the tank can be drained by a third pipe in three hours. If the tank is empty and all three pipes are open, in how many hours will the tank be filled?

a. 8 hours

b. 12 hours

c. 24 hours

Question

Jaidyn Wilcox

25 January, 23:35

+4

Answers (1)

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Rudy Edwards · Answer 1

I think its a because the question says one pipe fills it in 4 hrs, then 2 pipes in 6 hrs, so 3 pipes in 8 hrs?!

is this ok?

A tank can be filled by one pipe in four hours and by a second pipe in six hours; and when it is full, the tank can be drained by a third pipe in three hours. If the tank is empty and all three pipes are open, in how many hours will the tank be filled?a. 8 hoursb. 12 hoursc. 24 hours