document.write( "Question 250952: Before conference swim championships, Suzanne’s best time in the 200 yard butterfly race was 2 minutes, 23 seconds. In the conference championships, she won 10th place by swimming the 200 yard butterfly in 2 minutes, 15 seconds. What per cent decrease is that?\r
\n" ); document.write( "\n" ); document.write( "A.3.6% B.5.6% C.5.9% D.6.2% E.36.9%
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Algebra.Com's Answer #182730 by Theo(13342)\"\" \"About 
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2 minutes 23 seconds is equivalent to 143 seconds.\r
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\n" ); document.write( "\n" ); document.write( "2 minutes 15 seconds is equivalent to 135 seconds.\r
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\n" ); document.write( "\n" ); document.write( "she lowered her time by 8 seconds (135 + 8 = 143).\r
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\n" ); document.write( "\n" ); document.write( "the percent decrease equals the difference divided by the first time, with the result of that operation being multiplied by 100%. This becomes:\r
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\n" ); document.write( "\n" ); document.write( "8/143 = .05594405594 * 100% = 5.594405594 percent.\r
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\n" ); document.write( "\n" ); document.write( "that's pretty close to selection B of 5.6%\r
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