Question 694592
 The radiator of a car is filled with 3.8L of a solution of 45% antifreeze.
 How much of the solution should be drained and replaced with antifreeze to increase the concentration of antifreeze to 60%?
 Round to the nearest tenth of liter. 
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Use this equation:
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Let x = amt to be removed and then added
.45(3.8-x) + 1x = .60(3.8)