Question 1035818
Let n = your first mixture
.2(n)+.7(11)=.42(n+11)
.2n+7.7=.42n+4.62
.22n=3.08
n=14
14 ounces of 20% peanuts must be mixed with 11 ounces of 70% peanuts to get a mixture of 42% peanuts, in 25 ounces!!!!!!!!!!!!!!!