document.write( "Question 375683: If 4 apples and 2 oranges equals $1 and 2 apples and 3 oranges equals $070, how
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document.write( "much does each apple and each orange cost? \n" );
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Algebra.Com's Answer #267155 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let each apple cost x \n" ); document.write( "each orange cost y \n" ); document.write( ".. \n" ); document.write( "4x+2y=1...................1 \n" ); document.write( "2x+3y = 0.70..............2 \n" ); document.write( ".. \n" ); document.write( "multiply (2) by -2 \n" ); document.write( "-4x-6y=-1.40 \n" ); document.write( "add this to (1) \n" ); document.write( "4x-4x+2y-6y=1-1.40 \n" ); document.write( "-4y=-0.4 \n" ); document.write( "/-4 \n" ); document.write( "y=-0.4/-4 \n" ); document.write( "y=0.1 = 10 cents cost of orange \n" ); document.write( "plug value of y in (1) \n" ); document.write( "4x+2y=1 \n" ); document.write( "4x+2*0.1=1 \n" ); document.write( "4x+0.2=1 \n" ); document.write( "-0.2 \n" ); document.write( "4x=1-0.2 \n" ); document.write( "4x=0.8 \n" ); document.write( "/4 \n" ); document.write( "x=0.8/4 \n" ); document.write( "x=0.2= 20 cents = cost of apple \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |