document.write( "Question 700760: a man travels a certain distance at a rate of 75mph and then returns over the same route at 100 mph. What is his average of the roundtrip?
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Algebra.Com's Answer #431997 by Alan3354(69443)\"\" \"About 
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a man travels a certain distance at a rate of 75mph and then returns over the same route at 100 mph. What is his average of the roundtrip?
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\n" ); document.write( "RT avg = 2*75*100/(75+100)
\n" ); document.write( "=~ 85.714 mi/hr
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