Please turn on javascript in your browser to play chess.
Posers and Puzzles

Posers and Puzzles

  1. Standard member Mathurine
    sorozatgyilkos
    26 Feb '07 12:28
    1. You drive to the shops at 20 mph and return by the same route at 30 mph. Discounting the time spent shopping, what was your average speed?

    (easy)

    2. If you drive to the shops at 20 mph, how fast must you go (again returning by the same route) for your average speed to be 40 mph?

    (slightly more taxing)
  2. 26 Feb '07 13:39
    1. 24 mph
    2. infinite
  3. Subscriber sonhouse
    Fast and Curious
    26 Feb '07 15:12
    Originally posted by Mathurine
    [b]1. You drive to the shops at 20 mph and return by the same route at 30 mph. Discounting the time spent shopping, what was your average speed?

    (easy)

    2. If you drive to the shops at 20 mph, how fast must you go (again returning by the same route) for your average speed to be 40 mph?

    (slightly more taxing)[/b]
    like he said. There was a problem just like this posted less than a week ago.
  4. Standard member Mathurine
    sorozatgyilkos
    26 Feb '07 18:08
    Originally posted by sonhouse
    like he said. There was a problem just like this posted less than a week ago.
    mea maxissima culpa, then...

  5. 27 Feb '07 08:35
    Eh, I posted repeats as well, no biggie..