Results 1 to 4 of 4

Thread: An 'Oldie'

  1. #1
    WS Lounge VIP sdckapr's Avatar
    Join Date
    Jul 2002
    Location
    Pittsburgh, Pennsylvania, USA
    Posts
    11,225
    Thanks
    14
    Thanked 342 Times in 335 Posts

    An 'Oldie'

    This puzzle was first proposed in 1930 and many who have tried to solve it, insist that there is not enough information given to find an answer. They are incorrect:
    A man's age at death was one-twenty-ninth of the year of his birth.
    How old was he in the year 1900?

    Steve

  2. #2
    Plutonium Lounger
    Join Date
    Mar 2002
    Posts
    84,353
    Thanks
    0
    Thanked 29 Times in 29 Posts

    Re: An 'Oldie'

    <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>He became 44 years old in 1900.

    Assuming that 'age' is a whole number, the year of the man's birth is a multiple of 29, and the year of his death is a multiple of (29+1) = 30. Since the puzzle asks what his age was in 1900, we may assume that he was alive in 1900; since the puzzle was proposed in 1930, we may assume that he had died by then. The only multiple of 30 between 1900 and 1930 is 1920, so that must be the year of his death. He was 1920 / 30 = 64 years old then, so he became 44 in 1900.</font color=yellow></span hi>

  3. #3
    WS Lounge VIP sdckapr's Avatar
    Join Date
    Jul 2002
    Location
    Pittsburgh, Pennsylvania, USA
    Posts
    11,225
    Thanks
    14
    Thanked 342 Times in 335 Posts

    Re: An 'Oldie'

    Correct with the correct logic!
    Steve

  4. #4
    Platinum Lounger
    Join Date
    Nov 2001
    Location
    Melbourne, Victoria, Australia
    Posts
    5,016
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: An 'Oldie'

    I agree with your solution Hans, with the qualification that <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>if the puzzle was a "hypothetical" proposed in 1930, then age 65 would also work i.e. he wouldn't have died yet! His obituary would be due in 1950 <img src=/S/grin.gif border=0 alt=grin width=15 height=15>.</font color=yellow></span hi>

    Alan

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •