How many ounces of a 60% salt solution must be added to 70 ounces of a 20 percent salt solution so that the resulting mixture is 40% salt?	Choose the correct choice from the following:
A) 16.67 B) 30 C) 50 D) 60.33 E) 70
let x=ounces of 60% salt solution to be added   .2*70+.6x=.4(70+x)   x=70   Answer 70
<result>E</result>
How many ounces of a 60% salt solution must be added to 70 ounces of a 20 percent salt solution so that the resulting mixture is 40% salt?