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A store is having a sale on jelly beans and trail mix. for 8 lb of jelly beans in 3 pounds of Trail Mix,the total cost is $31 for 2 pounds of jelly beans in 5 pound of Trail Mix, the total cost is $12. find the cost for each pound of jelly bean and each of trail mixcost for each pound of jelly beans cost for each pound of trail mix

Respuesta :

ok

jelly beans = j

trail mix = t

8j + 3t = 31

2j + 5t = 12

Solve by elimination

-40j - 15t = -155

6j +15t = 36

- 34j = -119

j = -119/-34

j = $ 3.5

Find t

8(3.5) + 3t = 31

28 + 3t = 31

3t = 31 - 28

3t = 3

t = 3/3

t = $1

The cost of 1 pound of jelly beans = $3.5

The cost of 1 pond of trail mix = $1

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