SOLUTION: solve the following: Pipe A and Pipe B working together can fill a tank in 2 hours. If Pipe B requires 7 hours to fill the tank, how long does it take Pipe A to fill the tank alone

Question 865857: solve the following: Pipe A and Pipe B working together can fill a tank in 2 hours. If Pipe B requires 7 hours to fill the tank, how long does it take Pipe A to fill the tank alone?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add their rates of filling to get
their rate of filling together
A's rate:
( 1 tank filled ) / ( t hrs )
B's rate:
( 1 tank filled ) / ( 7 hrs )
Rate for A and B together:
( 1 tank filled ) / ( 2 hrs )
-------------------------------

Multiply both sides by

hrs

Pipe A alone fills the tank in
2 hrs 48 min

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