Guest Posted June 12, 2008 Report Share Posted June 12, 2008 A man goes and visits his friend 30 miles away. He doesnt mind speeding, so he travels at 60 mph to arrive in 30 minutes. On the way back he has car troubles, and it takes an hour to get home. What was the average speed for his trip? This is a deceptive problem Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 12, 2008 Report Share Posted June 12, 2008 Total distance travel = 60 miles Total time taken = 1.5 hours Average speed = 60 / 1.5 40 mph? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 12, 2008 Report Share Posted June 12, 2008 (edited) His trip included a visit to his friends so: He drove 2 lots of 30 miles: 60miles His trip there took 0.5h and back took 1h: 1.5 He was at his friends place for x h so: Ave Speed = 60miles/(x + 1.5) h Edited June 12, 2008 by Sonic_Hedgehog Quote Link to comment Share on other sites More sharing options...
0 Gambit Posted June 12, 2008 Report Share Posted June 12, 2008 40mph? this seems too easy. must be missing something <_< Quote Link to comment Share on other sites More sharing options...
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A man goes and visits his friend 30 miles away. He doesnt mind speeding, so he travels at 60 mph to arrive in 30 minutes. On the way back he has car troubles, and it takes an hour to get home. What was the average speed for his trip?
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