BMAD Posted July 14, 2013 Report Share Posted July 14, 2013 If you drive to the store at 20 mph, how fast must you go (again returning by the same route) for your average speed to be 40 mph? Quote Link to comment Share on other sites More sharing options...
0 Kikacat123 Posted July 14, 2013 Report Share Posted July 14, 2013 Hmm...it seems...impossible. Is that it? Quote Link to comment Share on other sites More sharing options...
0 BMAD Posted July 14, 2013 Author Report Share Posted July 14, 2013 why? Quote Link to comment Share on other sites More sharing options...
0 bonanova Posted July 14, 2013 Report Share Posted July 14, 2013 why? Because you've run out of time when you reached the store. Quote Link to comment Share on other sites More sharing options...
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