A nut wholesalersells a mix of peanuts and cashews. He charges $2.80 per pound for peanuts and $5.30 per pound for cashews. If the mix of peanuts and cashwes is to sellfor $3.30 pre pount, how many pound each of the peanuts and cashews should be used to marke 100 pounds of mix nuts?

Answer 1

If there are x lbs of peanuts, then there are (100-x) lbs of cashews. So work with the value of the mixture and its parts:

2.80x + 5.30(100-x) = 3.30(100)