SOLUTION: A store is having a sale on jellybeans and trail mix. For 2 pounds of jellybeans and 6 pounds of trail mix the total cost is $12 for 5 pounds of jellybeans and 3 pounds of trail m
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Question 1030719: A store is having a sale on jellybeans and trail mix. For 2 pounds of jellybeans and 6 pounds of trail mix the total cost is $12 for 5 pounds of jellybeans and 3 pounds of trail mix the total cost is $15 find the cost of each pound of jellybeans and each pound of trail mix..my email address is dewayne123700@gmail.com Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A store is having a sale on jellybeans and trail mix. For 2 pounds of jellybeans and 6 pounds of trail mix the total cost is $12 for 5 pounds of jellybeans and 3 pounds of trail mix the total cost is $15 find the cost of each pound of jellybeans and each pound of trail mix..
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2j + 6t = 12
5j + 3t = 15
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Modify for elimination::
3j + 6t = 12
10j + 6t = 30
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Subtract and sove for "j"::
7j = 18
j = 18/7 lbs (wt. of jellybeans needed)
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Solve for "t"::
3t = 15-5j
3t = 15-90/7
3t = (105-90)/7
3t = 15/7
t = 5/7 lbs (wt of trail mix needed)
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Cheers,
Stan H.
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