SOLUTION: The sterilization tank contains 100 gallons of a solution of 2% ordinary household bleach mixed with pure distilled water. New research indicates that the concentration of bleach

Question 250380: The sterilization tank contains 100 gallons of a solution of 2% ordinary household bleach mixed with pure distilled water. New research indicates that the concentration of bleach should be 5% for complete sterilization. How much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
You need to decrease the water from 50/51 to 20/21 so the Lowest Common Denominator is 21 x 51 = 1071.
The reduction is then from 1050/1071 to 1020/1071 or 30/1071 for 100 gallons of liquid this is 3000/1071 or 2.801120448 gallons roughly.
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