Problema Solution
How many oz. of mixed nuts that contain 30% peanut must Mark add to 11 oz. of mixed nuts that contain 70% peanuts to make a mixture with 52% peanuts?
Answer provided by our tutors
.3x + 11(.7) = .52(11 + x)
.3x + 7.7 = 5.72 + .52x
7.7 = 5.72 + .22x
1.98 = .22x
9 = x
9 ounces