document.write( "Question 1101341: An accountant rides a bus part of the way to work every day and walks the rest of the way. The bus averages 40 mph, and the accountant walks at a speed of 3 mph. The distance from home to work is 17 miles, and the total time for the trip is 3 hours. Find how far the accountant walks and how far he rides the bus.
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Algebra.Com's Answer #715902 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+d+\"$ = distance in miles traveled by bus
\n" ); document.write( " $\"+17+-+d+\"$ = distance in miles he walks
\n" ); document.write( "Let $\"+t+\"$ = time in hrs spent on bus
\n" ); document.write( " $\"+3+-+t+\"$ = time in hrs spent walking
\n" ); document.write( "-------------------------------------------
\n" ); document.write( "Equation for riding on bus:
\n" ); document.write( "(1) $\"+d+=+40t+\"$
\n" ); document.write( "Equation for walking:
\n" ); document.write( "(2) $\"+17+-+d+=+3%2A%28+3+-+t+%29+\"$
\n" ); document.write( "------------------------------
\n" ); document.write( "(2) $\"+17+-+d+=+9+-+3t+\"$
\n" ); document.write( "(2) $\"+d+=+3t+%2B+8+\"$
\n" ); document.write( "--------------------------
\n" ); document.write( "Set (1) = (2)
\n" ); document.write( " $\"+40t+=+3t+%2B+8+\"$
\n" ); document.write( " $\"+37t+=+8+\"$
\n" ); document.write( " $\"+t+=+.2161+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+.2162%2A60+=+12.973+\"$
\n" ); document.write( " $\"+.973%2A60+=+58.4+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( " $\"+3+-+t+=+3+-+.2161+\"$
\n" ); document.write( " $\"+3+-+t+=+2.7839+\"$
\n" ); document.write( " $\"+.7839%2A60+=+47.0+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( "He spent 12 min 58 sec on bus
\n" ); document.write( "He spent 2 hrs 47 min walking
\n" ); document.write( "-------------------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+d+=+40t+\"$
\n" ); document.write( " $\"+d+=+40%2A.2161+\"$
\n" ); document.write( " $\"+d+=+8.644+\"$ mi
\n" ); document.write( "---------------------
\n" ); document.write( " $\"+17+-+d+=+3%2A%28+3+-+t+%29+\"$
\n" ); document.write( " $\"+17+-+d+=+3%2A2.7839+\"$
\n" ); document.write( " $\"+17+-+d+=+8.3517+\"$
\n" ); document.write( " $\"+d+=+17+-+8.3517+\"$
\n" ); document.write( " $\"+d+=+8.648+\"$
\n" ); document.write( "---------------------
\n" ); document.write( "I think the error of $\"+.004+\"$ is due to
\n" ); document.write( "rounding off. check the math.
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