document.write( "Question 1183833: Hi
\n" ); document.write( "Bob went up a mountain at 5km per hour and down the mountain at 7.5 km per hour.
\n" ); document.write( "What was the average speed up and down the mountain. \r
\n" ); document.write( "\n" ); document.write( "Thanks
\n" ); document.write( "

Algebra.Com's Answer #814300 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Whole trip, d
\n" ); document.write( "Up the mountain, d/2
\n" ); document.write( "Down the mountain, d/2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Time going up, \"%28d%2F2%29%281%2F5%29\"
\n" ); document.write( "Time going down, \"%28d%2F2%29%281%2F7.5%29\"
\n" ); document.write( "Whole time, \"d%2F10%2Bd%2F15=3d%2F30%2B2d%2F30=5d%2F30=d%2F6\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Average speed for whole trip
\n" ); document.write( "\"d%2F%28d%2F6%29\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%286%29\"kilometers per hour
\n" ); document.write( "
\n" );