SOLUTION: How many quarts of pure antifreeze must be added to 5 quarts of a 10​% antifreeze solution to obtain a 20​% antifreeze​ solution?
You can put this solution on YOUR website! How many quarts of pure antifreeze must be added to 5 quarts of a 10% antifreeze solution to obtain a 20% antifreeze solution?
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let x = amt of pure antifreeze required
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The equation using decimal equiv of percent
.10(5) + x = .20(x+5)
.50 + x = .20x + 1
x - .20x = 1 - .5
.8x = .5
x - .5/.8
x = .625 qts of pure antifreeze required
