document.write( "Question 158336: $\"x%2By=500\"$ 0.3x + 0.5y = 175}} \n" ); document.write( "

Algebra.Com's Answer #116704 by checkley77(12844) $\"\"$ $\"About$

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x+y=500 MULTIPLY BY -.5 & ADD.
\n" ); document.write( "0.3x+0.5y=175
\n" ); document.write( "-.5X-.5Y=-250
\n" ); document.write( "-------------------------
\n" ); document.write( "-.2X=-75
\n" ); document.write( "X=-75/-.2
\n" ); document.write( "X=375 ANSWER.
\n" ); document.write( "375+Y=500
\n" ); document.write( "Y=500-375
\n" ); document.write( "Y=125 ANSWER.
\n" ); document.write( "PROOF;
\n" ); document.write( ".3*375+.5*125=175
\n" ); document.write( "112.5+62.5=175
\n" ); document.write( "175=175
\n" ); document.write( " \n" ); document.write( "

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