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

Question

3
pounds of walnuts and
2
pounds of chocolate chips, the total cost is
$11
. For
5
pounds of walnuts and
6
pounds of chocolate chips, the total cost is
$23
. Find the cost for each pound of walnuts and each pound of chocolate chips.

Answer 1

3w + 2c = 11
5w + 6c = 23

first times 3: 9w + 6c = 33
2nd as is : 5w + 6c = 23
subtract them:
4w = 10
w = 2.50

sub back into first to find c

Answer 2

6x+5y=23
2×+3y=11

Answer 3

Chocolate chips:1.75
Walnuts: 2.50

Answer 4

5x + 3y =23
2x +12y =47