If I drive to Atlanta at an average speed of 60 M P H and make the return trip at 50 M P H, what is my average speed for the complete trip?
2006-08-19 18:18:08 · 4 answers · asked by gedanini3@yahoo.com 2 in Cars & Transportation ➔ Commuting
The answer is 54.545454... mph. Say for example that Atlanta is 300 miles away. Then the first trip takes 5 hours, and the return takes 6 hours. That means you drove 600 miles in 11 hours, for an average of 600/11 = 54.54545454... miles per hour.
If Atlanta is 600 miles away, the numbers become 10 hours and 12 hours, so you drove 1200 miles in 22 hours, for an average of 1200/22 = 600/11 = 54.54545454...
No matter how far away Atlanta is, the answer will always be 54.54545454... or 54 6/11 miles per hour.
2006-08-19 18:29:25 · answer #1 · answered by Dave P 2 · 1⤊ 0⤋
54.5 mph
If you consider the trip one way to be 300 miles, it took 5 hours there and 6 hours back.
Then take 600 miles divided by (per) 11 hours.
2006-08-19 18:26:15 · answer #2 · answered by Anonymous · 1⤊ 0⤋
(60+50)/2=55
2006-08-19 18:23:58 · answer #3 · answered by spunk113 7 · 0⤊ 1⤋
55 MPH
2006-08-19 20:33:05 · answer #4 · answered by Bratso 4 · 0⤊ 1⤋