SOLUTION: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the
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-> SOLUTION: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the
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Question 64173: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum.
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1st: 3c+g=175
2nd: 2c+4g=200
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Multiply 1st by 2 and 2nd by 3 to get:
3rd: 6c+2g=350
4th: 6c+12g=600
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Subtract 3rd from 4th to get:
10g=250
g=25
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Substitute into 2nd to solve for c:
2c+4*25=200
2c=100
c=50
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# of chocolate bars = 50
# of packs of gum = 25
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Cheers,
Stan H
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