document.write( "Question 549607: a bottle of shampoo and a bottle of body wash cost 14.50 in all. if you buy 3 shampoo and 5 body wash for 56.90. how much was each bottle of shampoo \n" ); document.write( "

Algebra.Com's Answer #357938 by mananth(16946) $\"\"$ $\"About$

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x unit price shampoo
\n" ); document.write( " y unit price body wash
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\n" ); document.write( "1 x + 1 y = 14.5 .............1
\n" ); document.write( "3 x + 5 y = 57 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -5
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-5 x -5 y = -72.5
\n" ); document.write( "3 x + 5 y = 56.9
\n" ); document.write( "Add the two equations
\n" ); document.write( "-2 x = -15.60
\n" ); document.write( "/ -2
\n" ); document.write( "x = 7.80
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1 x + 1 y = 14.5
\n" ); document.write( "7.8 + 1 y = 14.5
\n" ); document.write( " 1 y = 14.5
\n" ); document.write( " 1 y = 6.7
\n" ); document.write( " y = 6 7/10
\n" ); document.write( "shampoo unit price 7.80
\n" ); document.write( "body wash unit price 6.70
\n" ); document.write( "m.ananth@hotmail.ca
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