Question

The Nut Case has 20 pounds of mixed peanuts and hickory nuts which sells for $8.40 per pound. Peanuts sell for $8.00 per pound, and hickory nuts sell for $9.00 per pound. How many pounds of hickory nuts are in the mix?

Answer 1

Let p be fraction peanuts

8.40 = 8p + 9(1-p)

solve for p

mix will have 20(1-p) pounds of hickory nuts