document.write( "Question 251981: An item for sale is marked down 20%. By what percent must it then be marked
\n" ); document.write( "up in order to return to the original selling price?
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Algebra.Com's Answer #183735 by palanisamy(496)\"\" \"About 
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Let the original price be 100
\n" ); document.write( "It is marked down by 20%. That is it marked as 80.
\n" ); document.write( "Again to raise it to 100, it should be increased by 20 from 80.
\n" ); document.write( "Percentage of increase = (20/80)x 100 = 25%
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