Question

A store is having a sale on chocolate chips and walnuts. For

6
pounds of chocolate chips and
2
pounds of walnuts, the total cost is
$14
. For
3
pounds of chocolate chips and
5
pounds of walnuts, the total cost is
$20
. Find the cost for each pound of chocolate chips and each pound of walnuts.

Answer 1

A) 6 cc + 2 w = 14
B) 3 cc + 5 w = 20
Multiplying B) by -2
B) -6cc -10 w = -40 then adding to A)
A) 6 cc + 2 w = 14
-8w = -26
w = 3.25

B) 3 cc + 5*3.25 = 20
B) 3 cc + 16.25 = 20
B) 3cc = 3.75
cc = 1.25