document.write( "Question 1019965: To keep the product of two numbers same if one number is increased by 40% then by what percent the other number is diminished \n" ); document.write( "
Algebra.Com's Answer #635904 by robertb(5830) You can put this solution on YOUR website! Let x and y be the two original numbers. \n" ); document.write( "let x be increased by 40%. \n" ); document.write( "Let r be the percentage by which y should be decreased.\r \n" ); document.write( "\n" ); document.write( "Then we want \r \n" ); document.write( "\n" ); document.write( "xy = (1.4x)*(1-r)y \n" ); document.write( "<==> 1 = 1.4(1-r) \n" ); document.write( "==> 1 = 1.4 - 1.4r \n" ); document.write( "==> 1.4r = 0.4 \n" ); document.write( "==> r = 2/7, or |