SOLUTION: how many quarts of pure antifreeze must be added to 5 quarts of a 10% antifreeze solution to obtain a 50% antifreeze solution?
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Question 835959: how many quarts of pure antifreeze must be added to 5 quarts of a 10% antifreeze solution to obtain a 50% antifreeze solution?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
.1*5+x=.5(5+x)
.5+x=2.5+.5x
.5x=2
x=4
check
.5+4=2.5+2
4.5=4.5
ok
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