document.write( "Question 1040815: Tom purchased an electric drill for $280 and later sold it for $350. What percentage profit did he make? \n" ); document.write( "
Algebra.Com's Answer #655774 by ikleyn(52790)\"\" \"About 
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\n" ); document.write( "\"%28%28350-280%29%2F280%29%2A100\" = \"%2870%2F280%29%2A100\" = 0.25*100 = 25%.\r
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\n" ); document.write( "\n" ); document.write( "The ratio \"70%2F280\" = 0.25 is multiplied by 100 to get percentage.\r
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\n" ); document.write( "\n" ); document.write( "On percentage, see the lesson Percentage problems in this site and the lessons associated with it.\r
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