document.write( "Question 621264: Ed bought $2,000 in stock shares one week before the stock price dropped $10.00. If he had waited for the price setback, he could have bought 10 more shares for the same amount. How many shares did he buy?\r
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document.write( "40, 50, or 60? \n" );
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Algebra.Com's Answer #390666 by Emsley(35)![]() ![]() ![]() You can put this solution on YOUR website! Let x=original price SO number bought=2000/x \n" ); document.write( "New price=x-10 So number bought= 2000/X-10) This is 10 more than before \n" ); document.write( "So 2000/(x-10)-2000/x =10 \n" ); document.write( "Muliply throughout by x(x-10)getting 2000x-2000(x-10)= 10x(x-10) \n" ); document.write( "Divide throughout by and rearrange x^2-10x-2000=0 (x-50)(x+40)=0 So x=50 \n" ); document.write( "That is original price was 50 So number bought was 2000/50=40 \n" ); document.write( " |