document.write( "Question 528674: One morning martin drove 80 miles in 2 hours. After lunch he covered 100 miles more in 3 hours. What was his average rate of speed in miles per hour for the 5 hours of driving? \n" ); document.write( "
Algebra.Com's Answer #349389 by josmiceli(19441)\"\" \"About 
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Average speed is always
\n" ); document.write( "( total distance ) / ( total time )
\n" ); document.write( "\"+%28+80+%2B+100+%29+%2F+%282+%2B+3%29+=+180%2F5+\"
\n" ); document.write( "\"+180%2F5+=+36+\"
\n" ); document.write( "The average speed is 36 mi/hr
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