document.write( "Question 1105311: Q#1)price of 3 football and 5 tennis ball is R.s305.the price of 2 tenis ball and 5 football is R.s. 350.find price of one fòotball. \n" ); document.write( "
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3F+5T=305
\n" ); document.write( "5F+2T=350
\n" ); document.write( "multiply top by 5 and the bottom by -3
\n" ); document.write( "15F+25T=1525
\n" ); document.write( "-15F-6T==-1050
\n" ); document.write( "19T=475
\n" ); document.write( "T=25
\n" ); document.write( "substitute into first
\n" ); document.write( "3F+125=305
\n" ); document.write( "3F=180
\n" ); document.write( "F=$60 ANSWER.
\n" ); document.write( "check in second
\n" ); document.write( "300+50=350.
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