A 72 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?
Select:
A) 8  B) 12  C) 18  D) 14  E) 16
Amount of salt = 7.2   Assume x gallons of water are added.   7.2 / 72 + x = 8/100   720 = 8x + 576   8x = 144   x = 18   18orrect Option: 18
<result>C</result>
A 72 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?