document.write( "Question 938478: I am trying to answer this question, but cannot understand it fully. If I cycle at 4 mph uphill, and 12 mph downhill, what is the average speed?
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Algebra.Com's Answer #571755 by Alan3354(69443)\"\" \"About 
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I am trying to answer this question, but cannot understand it fully. If I cycle at 4 mph uphill, and 12 mph downhill, what is the average speed?
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\n" ); document.write( "Avg speed of a round trip = 2*4*12/(4+12) = 96/16
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