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Thread: the old ship

  1. #1
    Junior Member
    Join Date
    Jun 2011
    Answers
    2

    the old ship

    Some years back I was travelling by a cargo ship from New Zealand to Tahiti. I was curious to look around the ship one day,and in the boiler room I asked a man how old the ship was. He smiled and replied in this way: The ship is twice as old as its boiler was when the ship was as old as the boiler is now. And the combined age of the ship and the boiler is thirty years.' Can you figure out what is the age of the ship and of the boiler?
    explain in detail


  2. #2
    Expert Member
    Join Date
    Jun 2006
    Answers
    410

    Re: the old ship

    Age of the ship is 18 and boilder is 12.

    Solution:

    Assume boilers current age is a.

    As per "The ship is twice as old as its boiler was when the ship was as old as the boiler is now"... when ship's age was a boilers age was a/2. Hence difference between their age is a/2. Hence current age of ship is a+a/2

    a+a/2+ a =30 => a=12


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