document.write( "Question 56767: 9. 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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Algebra.Com's Answer #38549 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
3C+G=150
\n" ); document.write( "2C+4G=200 NOW MULTIPLY EQ #1 BY -4 & ADD THE 2 EQ.
\n" ); document.write( "-12C-4G=-600
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\n" ); document.write( "-10C=-400
\n" ); document.write( "C=-400/-10
\n" ); document.write( "C=40 OR $.40 FOR THE CANDY BAR.
\n" ); document.write( "3*40+G=150
\n" ); document.write( "120+G=150
\n" ); document.write( "G=150-120
\n" ); document.write( "G=30 OR $.30 FOR THE GUM.
\n" ); document.write( "PROOF
\n" ); document.write( "2*40+4*30=200
\n" ); document.write( "80+120=200
\n" ); document.write( "200=200
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