John is making his own trail mix. He has bought two kinds of trail mix from the store, one that is 65% peanuts and one that is 30% peanuts. If he wants to have 10 lbs of trail mix that is 40% peanuts, how much of each will he need to use?

Answer 1

x + y = 10

.65 x + .30 y = .40 * 10