document.write( "Question 230638: How do you add and subtract percent. \n" ); document.write( "
Algebra.Com's Answer #170804 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
500 - 20% of 500 = 500 - .2*500 = 500 = 100 = 400\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "x% of anythikng is equal to x%/100% of that thing.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Example:\r
\n" ); document.write( "\n" ); document.write( "10% of x = .1 * x\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "20% of y = .2 * y\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "etc.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I would need a specific problem to go any further because I'm not sure what you are asking.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );