SOLUTION: At the football game, your group buys 10 hot dogs and 5 sodas and pays $12.50. Another group of people buys 7 hot dogs and 4 sodas for $9.00. What is the cost of one hot dog and

Question 157083: At the football game, your group buys 10 hot dogs and 5 sodas and pays $12.50. Another group of people buys 7 hot dogs and 4 sodas for $9.00. What is the cost of one hot dog and one soda?
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!
Remember: --> cost$(?); and --> cost$(?)
1st group:
-----------> eqn 1
2nd group:
--------------> eqn 2
In eqn 1 we get,
----------> eqn 3
Substitute eqn 3 to eqn 2:
--->

---->
--------------> cost of 1 soda=$0.50/ea
For hotdog, go eqn 3:

-------> cost of 1 hotdog =$1.00/ea
In doubt? go back eqn 1:

Thank you,
Jojo

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