SOLUTION: Rubbing alcohol is typically diluted with water to 70% strength. If you need 3.5 oz of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you co

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Question 158226: Rubbing alcohol is typically diluted with water to 70% strength. If you need 3.5 oz of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you combine?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.7X=45(3.5)
.7X=1.575
X=1.575/.7
X=2.25 AMOUNT OF 70% ALCOHOL.
3.5-2.25=1.25 AMOUNT OF WATER ADDED.