SOLUTION: How many liters of antifreeze should be added to 5L of water too produce a solution that is no less than 60% antifreeze and no more than 80% antifreeze?

Question 908923: How many liters of antifreeze should be added to 5L of water too produce a solution that is no less than 60% antifreeze and no more than 80% antifreeze?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Let T = any target value as percent antifreeze. Note that .

v = volume of 100% antifreeze to add, measured in liters
T will be a constant, but used separately as two values.

;
Solve this for v. You will then use two different values of T to evaluate the minimum and maximum specified amounts v to add.

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Evaluate v for T=60 and for T=80.
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