document.write( "Question 34272: I need help on one last problem. Just can't get it set up right.\r
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document.write( "A store sells televisions for $360 and VCR's for $270. At the beginning of the week its entire stock is worth $54,000. During the week it sells three quarters of the TV's and one third of the VCR's for a total of $30,600. How many tv's and vcr's did it have in its stock at the beginning of the week?\r
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document.write( "Thanks. \n" );
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Algebra.Com's Answer #20553 by mukhopadhyay(490)![]() ![]() ![]() You can put this solution on YOUR website! Number of TV's = x \n" ); document.write( "Number of VCR's = y \n" ); document.write( "360x + 270y = 54000 \n" ); document.write( "=> 4x + 3y = 600....(1) \n" ); document.write( "3x/4 + y/3 = 30600 \n" ); document.write( "=> 9x + 4y = 367200...(2) \n" ); document.write( "We need to solve for x,y using (1) and (2) \n" ); document.write( "Multiply (1) with 4 and (2) with 3 \n" ); document.write( "16x + 12y = 2400......(3) \n" ); document.write( "27x + 12y = 1101600..(.4) \n" ); document.write( "Subtract (3) from (4): \n" ); document.write( "11x = 1099200 \n" ); document.write( "=> x comes in fraction \n" ); document.write( "Note: Check your problem \n" ); document.write( " |