document.write( "Question 402077: If you bike for 60km at 30km/h and return at 20km/h, what is your average speed for the whole trip? \n" ); document.write( "
Algebra.Com's Answer #284488 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
Use the harmonic mean:\r
\n" ); document.write( "\n" ); document.write( "\"2%2F%281%2F30+%2B+1%2F20%29+=+24+km%2Fhr\"
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