Question
125 gallons of mixture of milk and water contains 20% water. What amount of water needs to be added to this milk-water mixture in order to increase the percentage of water to 25% of the new mixture?
Answer: Option C
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C
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C
Option c
We need to find out how much of a solution of 100% water needs to be added to a solution containing 20% water to attain a dilution of 25% . This can be found using allegation out as follows
Ratio = 75:5 = 15:1
That is for 15 parts of a 20% water solution, one part of 100% water solution needs to be added. Therefore, for a solution of 125 gallons, 12515=8.33 gallons needs to be added
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