document.write( "Question 745765: Michaela climbed up a mountain at an average speed of 3 mi/h. She climbed down at an average speed of 5 mi/h. What's her average speed? \n" ); document.write( "
Algebra.Com's Answer #453988 by Alan3354(69443)\"\" \"About 
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Michaela climbed up a mountain at an average speed of 3 mi/h. She climbed down at an average speed of 5 mi/h. What's her average speed?
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\n" ); document.write( "Avg = 2*3*5/(3 + 5)
\n" ); document.write( "= 3.75 mi/hr
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