document.write( "Question 769678: A train leaves a station and travels at 80 mi/hr for 3.5 hours, and then at 10 mi/hr for 2 hours to reach its destination. What was the train's average speed for the entire trip? \n" ); document.write( "
Algebra.Com's Answer #468998 by Cromlix(4381)\"\" \"About 
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Distance = Speed * Time
\n" ); document.write( "1)Distance = 80mi/hr * 3.5hrs
\n" ); document.write( " Distance = 280mi
\n" ); document.write( "2)Distance = 10mi/hr * 2hrs
\n" ); document.write( " Distance = 20mi
\n" ); document.write( "Total Distance = 300 miles.
\n" ); document.write( "....................
\n" ); document.write( "Speed = Distance/ Time
\n" ); document.write( "Speed = 300mi/5.5hrs
\n" ); document.write( "Average Speed = 54.55mi/hr
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-)
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