Gronala costs $4.50 per pound. Assorted nuts cost $7.00 per pound. how many pounds of granola and nuts are needed to make 7 pounds of trail mix that costs $5.00 per pound

We would need 5.6 Gronala and 1.4 nut

Let G be the granola we need (in pound)

Let N be the nut we need (in pound)

Trail mix cost $5.00 per pound---> cost for 7 pound = 5 x 7 = $ 35

4.5G+7N = 35

G + N = 7

Therefore G = 5.6 N=1.4, we would need 5.6 pound granola & 1.4 pound nut