Problema Solution
walnuts sell for $10 per lb. and pecans for $18 per lb. How much of each typ of nut would produce 40 pounds of a cix that sells for $15 per lb.
Answer provided by our tutors
let say x lb of walnuts are needed
and y lb pecans are needed such that
x + y = 40
and 10x + 18y = 40 * 15
10x + 18 ( 40 - x) = 600
10x + 720 - 18x = 620
-8x = 620 -700
8x = 80
x = 10
and y = 40-10 = 30
10lb of walnut and 30 lb of pecans are needed