document.write( "Question 560083: A train travels for 40 hours at a speed of 60 mph then the train travels for 2 hours at a speed of 75 miles per hour. What is the average speed? \n" ); document.write( "

Algebra.Com's Answer #363656 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
The average speed is always ( total distance traveled ) / ( total elapsed time )
\n" ); document.write( "At 60 mi/hr:
\n" ); document.write( " $\"+d+=+60%2A40+\"$
\n" ); document.write( " $\"+d+=+2400+\"$ mi
\n" ); document.write( "At 75 mi/hr:
\n" ); document.write( " $\"+d+=+75%2A2+\"$
\n" ); document.write( " $\"+d+=+150+\"$ mi
\n" ); document.write( "--------------
\n" ); document.write( "Total distance = $\"+2400+%2B+150+\"$
\n" ); document.write( " $\"+2400+%2B+150+=+2550+\"$ mi
\n" ); document.write( "Total time is $\"+40+%2B+2+=+42+\"$ hrs
\n" ); document.write( "Total distance /total time is $\"+2550%2F42+=+60.714+\"$ mi/hr \n" ); document.write( "

\n" );