SOLUTION: "The radiator in your car contains 4 gallons of antifreeze and water. The mixture is 45% antifreeze. How much of the mixture should be drained and replaced with pure antifreeze in
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Question 1129217: "The radiator in your car contains 4 gallons of antifreeze and water. The mixture is 45% antifreeze. How much of the mixture should be drained and replaced with pure antifreeze in order to have a 60% antifreeze solution? Solve as a system of linear equations in two variables and round to the nearest tenth of a gallon." Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = gallons of pure antifreeze drained from radiator
Let = total gallons of mixture removed from radiator
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(1)
(2)
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(2)
(2)
(2)
(2)
4.4 gallons of mixture should be removed
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check:
error due to rounding off
OK
