Problema Solution
An aquarium tank can hold 5400 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 90 minutes. The second pipe can fill the tank in 60 minutes by itself. When both pipes are working together, how long does it take them to fill the tank?
Answer provided by our tutors
The capacity of the first pipe is: 5400/90 = 60 liters/minute
The capacity of the second pipe is:5400/60=90 liters/minute
The total capacity of two pipes is: 60 + 90 = 150 liters/minute
Time it takes them to fill the tank is: 5400/150 = 36 minutes