How many ounces of a 60% salt solution must be added to 50 ounces of a 20 percent salt solution so that the resulting mixture is 50% salt?
Choose the correct option:  A) 16.67  B) 30  C) 50  D) 60.33  E) 150
let x=ounces of 60% salt solution to be added   .2*50+.6x=.5(50+x)   x=150   Answer 150
<result>E</result>
How many ounces of a 60% salt solution must be added to 50 ounces of a 20 percent salt solution so that the resulting mixture is 50% salt?