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Rbt drove there at 55, back at 45; took 2hrs longer back 
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Rbt drove there at 55, back at 45; took 2hrs longer back
by mi11ertime on Mon Sep 06, 2010 4:19 am
Robert drove to the shore at an average speed of 55 mph and returned home over the same route at the average speed of 45 mph. It took him 2 hours longer on the return trip. What was his average speed for the entire trip?
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Re: Distance Problem 
by andy44 on Mon Sep 06, 2010 4:40 pm
you can see how to set this up here
http://www.purplemath.com/modules/distance.htm
http://www.purplemath.com/modules/distance.htm
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