SOLUTION: How many liters of water must be added to 10 liters of a 75% antifreeze solution in order to produce a 50% solution?
How many ounces of pure alcohol must be added to 40 ounces of
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Question 728785: How many liters of water must be added to 10 liters of a 75% antifreeze solution in order to produce a 50% solution?
How many ounces of pure alcohol must be added to 40 ounces of a 70% alcohol solution to produce an 85% alcohol solution?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Both of these are similar but in opposite directions. I'll choose to help with the alcohol exercise because you just asked the other one, the exact same one, in another post again after asking it here.
Let w = ounces of pure alcohol to add.
.
Solve for w.
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