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Posers and Puzzles

Posers and Puzzles

  1. 23 Mar '05 21:09
    There is a circular track 1 mile long. A man must complete the track twice (thus doing 2 miles). Assuming he travels at 30mph on the first lap, what speed must he average on the second lap to finish with an overall average speed of 60 mph?

    Sorry if this one's been done already!
  2. 23 Mar '05 21:26
    Well to average 60 mph he must complete two miles in two minutes.

    So if he travels at 30 mph for the first lap this will take 2 minutes in itself so........... that leaves no time at all to complete the second lap.
    Enter Einstein or a famous footballer with nice Porche.
  3. Standard member PBE6
    Bananarama
    23 Mar '05 21:49
    Can't win, don't try!
  4. Standard member Alcra
    Lazy Sod
    24 Mar '05 07:58
    Originally posted by borissa
    There is a circular track 1 mile long. A man must complete the track twice (thus doing 2 miles). Assuming he travels at 30mph on the first lap, what speed must he average on the second lap to finish with an overall average speed of 60 mph?

    Sorry if this one's been done already!
    90mph
  5. Standard member XanthosNZ
    Cancerous Bus Crash
    24 Mar '05 08:39
    Originally posted by Alcra
    90mph
    Bzzt! Wrong.

    (assuming non-sarcasm (does that have a hyphen? (does it matter?)))
  6. 24 Mar '05 13:32
    Originally posted by PBE6
    Can't win, don't try!
    I'm sure i said that??????