Problem Solving (PS) | Re: A drum of bathroom cleaner contains 200 gallons of a cleaning solution

Based on the question, we realize the value will be closer to 20 than to 10.

200 at 20% 50G at 0%
A-----------C------------------------------------B

The gallons mixed are in the ratio of 4:1 since 200 G are mixed with 50 G. Hence 4 parts of bleach will be mixed with one part of water. Hence 16%.

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