SOLUTION: A tank with a base area of 480 square centimeters and height 15 centimeters is 2/3 filled with water. Water is flowing from Faucet X into the tank at a rate of 1.5 liters per minut

Question 1091526: A tank with a base area of 480 square centimeters and height 15 centimeters is 2/3 filled with water. Water is flowing from Faucet X into the tank at a rate of 1.5 liters per minute. At the same time, water is drained out from Faucet Y at a rate of 2.1 liters per minute. How long will it take to empty the tank?
( 1 L = 1,000 cm3)
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A tank with a base area of 480 square centimeters and height 15 centimeters is 2/3 filled with water.
Find how many cu/cm of water in the tank
480 * 15 * = 4800 cu/cm
Water is flowing from Faucet X into the tank at a rate of 1.5 liters per minute.
change 4800 cu/cm to liters 4800/1000 = 4.8 lt
At the same time, water is drained out from Faucet Y at a rate of 2.1 liters per minute.
How long will it take to empty the tank?
let t = the no. of min to drain 4.8 liters
2.1t - 1.5t = 4.8
.6t = 4.8
t = 4.8/.6
t = 8 minutes
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