SOLUTION: How many gallons of a 70% antifreeze solution must be mixed with 90 gallons of 25% antifreeze to get a mixture that is 60% antifreeze.
You need to add____ gallons of a 70% antif
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Question 460581: How many gallons of a 70% antifreeze solution must be mixed with 90 gallons of 25% antifreeze to get a mixture that is 60% antifreeze.
You need to add____ gallons of a 70% antifreeze solution.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
.7x+.25*90=.6(x+90)
x=315
315 gallons of 70% antifreeze.
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