document.write( "Question 603173: you can buy 3 hotdogs and 1 coke for $4.55. you can buy 2 hotdogs and 1 coke for $3.30 how much does 1 hotdog cost \n" ); document.write( "

Algebra.Com's Answer #380610 by mananth(16946) $\"\"$ $\"About$

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x cost of each hot dog
\n" ); document.write( "y cost of each coke
\n" ); document.write( "Total attended
\n" ); document.write( "3 x + 1 y = 4.55 .............1
\n" ); document.write( "
\n" ); document.write( "2.00 x + 1.00 y = 3.30 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1.00
\n" ); document.write( "Multiply (2) by 1.00
\n" ); document.write( "-3.00 x -1.00 y = -4.55
\n" ); document.write( "2.00 x + 1.00 y = 3.30
\n" ); document.write( "Add the two equations
\n" ); document.write( "-1.00 x = -1.25
\n" ); document.write( "/ -1.00
\n" ); document.write( "x = 1.25
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "3.00 x + 1.00 y = 4.55
\n" ); document.write( "3.75 + 1.00 y = 4.55
\n" ); document.write( " 1.00 y = 4.55 -3.75
\n" ); document.write( " 1.00 y = 0.80
\n" ); document.write( " y = 0.80
\n" ); document.write( "$1.25 cost of each hot dog
\n" ); document.write( "$0.80 cost of each coke
\n" ); document.write( "m.ananth@hotmail.ca
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