document.write( "Question 485070: Distance and time: a bicyclist rides uphill at 10 miles per hour for 5 miles and then rides downhill at 20 miles per hour for 5 miles. What is the bicyclist's average speed? \n" ); document.write( "
Algebra.Com's Answer #331817 by Alan3354(69443)\"\" \"About 
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Avg = 2*10*20/(10 + 20) = 400/30
\n" ); document.write( "= 40/3 mi/hr
\n" ); document.write( "13.333... mi/hr
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