A 64 gallon solution of salt and water is 10% salt. How many gallons of water must be added to the solution in order to decrease the salt to 8% of the volume?  Choices: A) 8 B) 12 C) 13 D) 14 E) 16
Amount of salt = 6.4   Assume x gallons of water are added.   6.4 / 64 + x = 8/100   640 = 8x + 512   8x = 128   x = 16   Correct Option: 16
<result>E</result>
A 64 gallon solution of salt and water is 10% salt. How many gallons of water must be added to the solution in order to decrease the salt to 8% of the volume?