document.write( "Question 661470: joe traveled 40 mph to a hotel taking the same route back he drove 10mph back what was the average speed \n" ); document.write( "
Algebra.Com's Answer #411625 by stanbon(75887)\"\" \"About 
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joe traveled 40 mph to a hotel ;
\n" ); document.write( " taking the same route back he drove 10 mph back ;
\n" ); document.write( " what was the average speed
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\n" ); document.write( "To hospital DATA:
\n" ); document.write( "rate = 40 mph ; distance = x miles ; time = x/40 hrs.
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\n" ); document.write( "To home DATA:
\n" ); document.write( "rate = 10 mph ; distance = x miles ; time = x/10 hrs.
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\n" ); document.write( "Average speed = total distance/total time = (2x)/[(x/40)+(x/10)]
\n" ); document.write( "--------
\n" ); document.write( "= (2x)/[(10x+40x)/(400)]
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\n" ); document.write( "= (2x)/[(50x)/400]
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\n" ); document.write( "= (800x/50x]
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\n" ); document.write( "= 16 mph
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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