Asked by AD12
A tank is filled with an intake pipe that will fill it in 5 hours and an outlet pipe that will empty it in 15 hours. If both pipes are left open, how long will it take to fill the empty tank?
Answers
Answered by
Steve
1/5 - 1/15 = 1/x
2/15 = 1/x
x = 15/2
2/15 = 1/x
x = 15/2
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