Question

PLEASE HELP! A S A P

John is mixing dry nuts with dry fruit to make some trail mix. The dry nuts cost $2.50 per pound and the dry fruit cost $3.00 per pound. If John wants to make a total of 40 pounds of trail mix to sell at the price $2.80 per pound. How many pounds of dry nuts should John use in the mix?

Answer 1

Let x be the # of pound of nuts and y the # of pounds of fruit.

x + y = 40 (pounds)
(2.5)x + (3)y = 2.8)(40)

x + y = 40
2.5x + 3 y = 112

Solving it gives x = 16 pounds of nuts (and y = 24 pounds of fruit)