SOLUTION: One pump fills a tank 4 times as fast as another pump. If the pumps work together, they fill the tank in 28 minutes. How long does it take for each pump to fill the tank? It take

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Question 183377: One pump fills a tank 4 times as fast as another pump. If the pumps work together, they fill the tank in 28 minutes. How long does it take for each pump to fill the tank?
It takes the faster pump ______ minutes to fill the tank when working alone and it takes the slower pump ______ minutes.
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Let the slow pump rate be X. Then the fast pump rate is 4X
Together they can pump at X+4X = 5X
The slow pump will be 1/5 as fast. So it will take 28*5 minutes
The faster pump will be 4/5 as fast. So it will take (28*5)/4 minutes