SOLUTION: A vendor sells hot dogs and bags of potato chips. A customer buys 2 hot dogs and 5 bags of potato chips for $7.75. Another customer buys 4 hot dogs and 2 bags of potato chips for $
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-> SOLUTION: A vendor sells hot dogs and bags of potato chips. A customer buys 2 hot dogs and 5 bags of potato chips for $7.75. Another customer buys 4 hot dogs and 2 bags of potato chips for $
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Question 419113: A vendor sells hot dogs and bags of potato chips. A customer buys 2 hot dogs and 5 bags of potato chips for $7.75. Another customer buys 4 hot dogs and 2 bags of potato chips for $9.50. Find the cost of each item. Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Hot dogs ----$x
chips -------$y
...
2 x + 5 y = 7.75 .............1
4 x + 2 y = 9.5 .............2
multiply (1)by -2
Multiply (2) by 5
-4 x + -10 y = -15.5
20 x + 10 y = 47.5
Add the two equations
16 x + 0 y = 32
/ 16
x= 2
plug value of x in (1)
2 x + 5 y = 7.75
4 + 5 y = 7.75
5 y = 7.75 + -4
5 y = 3.75
y = 0.75
