algebra college

Question

A store is having a sale on chocolate chips and walnuts. For 5 pounds of chocolate chips and 3 pounds of walnuts, the total cost is $15. For 2 pounds of chocolate chips and 6 pounds of walnuts, the total cost is 12 . Find the cost for each pound of chocolate chips and each pound of walnuts.

Answer 1

5c +3w =15

10c +6w = 30

2c +6w =12

8c =18

c=18/8=9/4=$2.25 per pound of chocolate chip

c+3w=6

3w=6-2.25=3.75

w=3.75/3 = $1.25 per pound of walnuts