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A store is having a sale on chocolate chips and walnuts. For
12
pounds of chocolate chips and
2
pounds of walnuts, the total cost is
$23
. For
3
pounds of chocolate chips and
5
pounds of walnuts, the total cost is
$17
. Find the cost for each pound of chocolate chips and each pound of walnuts.

Respuesta :

onfleek29
let x=cost/lb of walnuts
let y=cost/lb of chocolate chips
..
3x+5y=16
6x+2y=22

..
6x+10y=32 (mult. eq by 2)
6x+2y=22
subtract:
8y=10
y=10/8=1.25
x=16-5y=9.75
cost/lb of walnuts=$1.25
cost/lb of chocolate chips=$9.75 is the answer

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