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tankabanditka [31]
3 years ago
8

A store is having a sale on walnuts and chocolate chips. For 3 pounds of walnuts and 2 pounds of chocolate chips, the total cost

is $13. For 8 pounds of walnuts and 4 pounds of chocolate chips, the total cost is $33. Find the cost for each pound of walnuts and each pound of chocolate chips .
Mathematics
1 answer:
Lena [83]3 years ago
7 0

Answer:

$9.75

Step-by-step explanation:

A store is having a sale on walnuts and chocolate chips. For 3 pounds of walnuts and 5 pounds of chocolate chips, the total cost is $16. For 6 pounds of walnuts and 2 pounds of chocolate chips, the total cost is $22

. Find the cost for each pound of walnuts and each pound of chocolate chips.

***

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

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