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 70247: 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 checkley75(3666) (Show Source):
You can put this solution on YOUR website! 3C+G=175 OOR G=175-3C
2C+4G=200 NOW SUBSTITUTE (175-3C) FOR G IN THE SECOND EQUATION & SOLVE FOR C
2C+4(175-3C)=200
2C+700-12C=200
-10C=-500
C=-500/-10
C=50 COST OF THE CHOCOLATE BAR
G=175-3*50
G=175-150
G=25 COST OF THE GUM
PROOF
2*50+4*25=200
100+100=200
200=200
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