document.write( "Question 186823: Lenore drove 200km. For the first 100km of the trip, she drove at a speed of 40 km/h. For the second half of the trip, she traveled at a speed of 60 km/h. What was the average speed of the entire trip?\r
\n" ); document.write( "\n" ); document.write( "I know that the average speed is defined as total distance divided by total time:
\n" ); document.write( "R=D/T but I am having no luck setting up the problem.
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Algebra.Com's Answer #140044 by feliz1965(151)\"\" \"About 
You can put this solution on YOUR website!
THE MEAN = [40km/h + 60km/h]/2 speeds = average speed\r
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\n" ); document.write( "\n" ); document.write( "40 + 60/2 = 100/2 = 50km per hour.\r
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