document.write( "Question 505478: michael drove to a friends house at a rate of 40mi/h. he returned by the same route at a rate of 45mi/h. the driving time for the round trip was 4 h. what is the distance michaek traveled? \n" ); document.write( "
Algebra.Com's Answer #339899 by stanbon(75887)\"\" \"About 
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michael drove to a friends house at a rate of 40mi/h. he returned by the same route at a rate of 45mi/h. the driving time for the round trip was 4 h. what is the distance michael traveled?
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\n" ); document.write( "To-house DATA:
\n" ); document.write( "rate = 40 mph ; time = t hrs ; distance = rt = 40t miles
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\n" ); document.write( "From house DATA:
\n" ); document.write( "rate = 45 mph ; time = 4-t hrs ; distance = rt = 45(4-t) miles
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\n" ); document.write( "Equation:
\n" ); document.write( "distance = distance
\n" ); document.write( "40t = 45(4-t)
\n" ); document.write( "40t = 45*4 - 45t
\n" ); document.write( "85t = 45*4
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\n" ); document.write( "t = (9/17)4 hrs
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\n" ); document.write( "Ans: distance 40t = 40(9/17)4 = 84.71 miles
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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