document.write( "Question 486959: Michael drove to a friends house at 40mph. He returned by the same route at 45mph. THe driving time for the round trip was 4 hours. What is the distance Michael traveled? \n" ); document.write( "
Algebra.Com's Answer #332873 by John10(297)\"\" \"About 
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Apply the formula Time = Distance/ speed
\n" ); document.write( "At the same distance D:
\n" ); document.write( "D/40 + D/45 = 4
\n" ); document.write( "9D + 8D = 1440
\n" ); document.write( "17D = 1440
\n" ); document.write( "D = 1440/17
\n" ); document.write( "D = 84.7 miles
\n" ); document.write( "John10:)
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