SOLUTION: An aquarium tank can hold 6600 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 66 minutes. The second pipe can f

Question 957755: An aquarium tank can hold
6600 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 66 minutes. The second pipe can fill the tank in 55 minutes by itself. When both pipes are working together, how long does it take them to fill the tank
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
First pipe: 1 tank/66min=1/66 tank/min*5/5=5/330 tank/min
Second pipe: 1 tank/55min=1/55 tank/min*6/6=6/330 tank/min
Together: 5/330 tank/min+6/330 tank/min=11/330 tank/min
To fill 1 tank: 1 tank/(11/330 tank/min)=330/11 min=33 minutes.
ANSWER: Using both pipes it takes 33 minutes to fill the tank.
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