SOLUTION: Tap P takes 3 hours to fill a tank, Tap R takes 6 hours to fill the tank.If tap R opens one hour later after opening tap P .What is the time taken by both taps to fill the tank?

Question 1068434: Tap P takes 3 hours to fill a tank, Tap R takes 6 hours to fill the tank.If tap R opens one hour later after opening tap P .What is the time taken by both taps to fill the tank?

Answer by josgarithmetic(39613) (Show Source): You can put this solution on YOUR website!
P,
R,
P and R together,

Let t be the time that P and R fill the tank together.

Solve for t.
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