Question 645893: The radiator in a car is filled with a solution of 60% antifreeze amd 40% water. The manufacturer of the antifreeze suggests that. for summer driving, optimal cooling of the engine is obtained with only 40% antifreeze. If the capacity of the radiator is 3.6 L, how much coolant should be drained and replaced with water to reduce the antifreeze concentration to the recommended level?
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! The radiator in a car is filled with a solution of 60% antifreeze amd 40% water. The manufacturer of the antifreeze suggests that. for summer driving, optimal cooling of the engine is obtained with only 40% antifreeze. If the capacity of the radiator is 3.6 L, how much coolant should be drained and replaced with water to reduce the antifreeze concentration to the recommended level?
let x=amt of 60% coolant should be drained and replaced with water
3.6-x=amt of 60% coolant remaining
..
60%(3.6-x)+0%x=40%*3.6
2.16-.6x=1.44
.6x=2.16-1.44=.72
x=1.2
amt of 60% coolant should be drained and replaced with water=1.2 L
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