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Gary mixes a solution using two types of concentration of salt: 0.70 gallons of 5% salt and 0.30


gallons of 22% salt.


What is the salt concentration of the mixed solution? Answer choices are rounded to the nearest


whole percent.


o


O 17%


o


63%


o


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Answer 1

The salt concentration of the mixed solution = 10%

Explanation:

First assuming that the concentration of salt given is on a vol% basis.

First solution has 0.7 gallon of 5% salt

Amount of salt in this solution = 5% × 0.7 = 0.035 gallon

Second solution has 0.3 gallon of 22% salt

Amount of salt in this solution = 22% × 0.3 = 0.066 gallon

Total amount of salt in the resulting solution = 0.035 + 0.066 = 0.101 gallon

Total volume of the resulting solution = 0.7 + 0.3 = 1.00 gallon

Concentration of the mixture of salt = (0.101/1) = 0.101 = 10.1% = 10% to the nearest percent

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