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Old 06-20-07 | 11:10 AM
  #51  
lvleph
Should be out Riding
 
Joined: Dec 2006
Posts: 1,902
Likes: 2
From: Blacksburg, VA

Bikes: Bob Jackson Vigorelli

Originally Posted by Bobby Lex
You guys are brutal!

Actually, because of "rounding" some of the answers above are wrong.
Here's the formula:

Miles...divided by minutes...times 60...equals average speed (in miles per hour)

Applied to the OP's data:


14 divided by 46 = 0.30434

0.30434 times 60 = 18.26 mph average speed


Bob

P.S. It is useful to know this formula even if you DO have a cycling computer because it can help you figure your ETA or how fast you have to go to make it to a destination by a certain time. (e.g. I have 20 minutes left to go 8 miles to get to the start of the Club Ride on time....8 divided by 20 = .4 times 60 = 24. Thus, you have to average 24 mph to get to the Club Ride on time.)
Since you are claiming others are wrong...
14 divided by 46 = 0.30435

0.30435 times 60 = 18.26 mph average speed

But why not be consistent and keep it to 4 significant figures like you have in the final answer?
14 divided by 46 = 0.3043

0.3043 times 60 = 18.26 mph average speed

Last edited by lvleph; 06-20-07 at 11:40 AM.
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