SOLUTION: For extremely cold temperatures, an automobile facturer recommends that a 80% antifreeze and 20% water mix be used in the cooling system of a car. How many quarts of pure 100% anti

Question 331576: For extremely cold temperatures, an automobile facturer recommends that a 80% antifreeze and 20% water mix be used in the cooling system of a car. How many quarts of pure 100% antifreeze and 50% antifreeze and 50% water mix should be combined to make 11 quarts of 80% antifreeze and 20% water mix?
Answer by galactus(183) (Show Source): You can put this solution on YOUR website!
Let x=amount of pure antifreeze to be added.
Since we want 11 quarts, then 11-x is the amount of 50% antifreeze.

quarts of pure and quarts of 50/50

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