document.write( "Question 590461: A dress is marked down 25% and then it is marked down 20% from the discounted price. By what percent is the dress marked down after both discounts? \n" ); document.write( "

Algebra.Com's Answer #375176 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "When you mark something up, you add the percent to 100%, chnage it to a decimal\r\n" );
document.write( "and multiply be the old price.\r\n" );
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document.write( "When you mark something down, you subtract the percent from 100%, chnage it to\r\n" );
document.write( "a decimal and multiply be the old price. \r\n" );
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document.write( "Suppose the dress costs  $N\r\n" );
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\n" ); document.write( "A dress is marked down 25%...
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So we subtract 100%-25% getting 75%.  We change that to the decimal .75 and\r\n" );
document.write( "multiply it by 5N and get $.75*N\r\n" );
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\n" ); document.write( "...and then it is marked down 20% from the discounted price.
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document.write( "So we subtract 100%-20% getting 80%.  We change that to the decimal .80 and\r\n" );
document.write( "multiply it this time by $.75N and get $.80×.75*N = $.60N.  So it's the same as\r\n" );
document.write( "multiplying by .60 which is 60%, which is what you would get if you subtracted\r\n" );
document.write( "the discount percentage from 100%, which means the percent the dress was marked\r\n" );
document.write( "down after both discounts is 100%-60% or 40%.\r\n" );
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document.write( "Edwin

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