SOLUTION: Have radiator that holds 16 quarts antifreeze. Currently has 16 quarts antifreeze 25% solution. How much antifreeze should we take out and then add back in to make a 40% solution o
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Question 163319: Have radiator that holds 16 quarts antifreeze. Currently has 16 quarts antifreeze 25% solution. How much antifreeze should we take out and then add back in to make a 40% solution of 16 quarts?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
let x="amount to be replaced"
(16-x)(25%)+(x)(100%)=(16)(40%) __ 4-.25x+x=6.4 __ .75x=2.4 __ x=3.2
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