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 co
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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 co
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Question 90655: 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 OR G=175-3C
2C+4G=200 NOW SUBSTITIUTE (175-3C) FOR G IN THIS EQUATION & SOLVE FOR C.
2C+4(175-3C)=200
2C+700-12C=200
-10C=200-700
-10C=-500
C=-500/-10
C=50 COST OF THE CHOCOLATE BAR.
3*50+G=175
150+G=175
G=175-150\
G=25 COST OF GUM.
PROOF
2*50+4*25=200
100+100=200
200=200
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