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Thread: Brain Teaser?

  1. #1
    Join Date
    Sep 2007
    Posts
    1

    Default Brain Teaser?

    If an investment grows exponentially and doubles every 10 years, how long will it take to triple? Give both an exact answer and an approximation correct to three decimal places.

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  2. #2
    Join Date
    Aug 2009
    Posts
    15

    Default

    no. of years=10*(log3/log2) =10*(0.477/0.30) ~ 15.9 years

  3. #3
    Join Date
    Aug 2009
    Location
    Chennai
    Posts
    1

    Default

    Hard On this.

    Thanks

    Mploy.in

  4. #4
    Join Date
    Jun 2010
    Posts
    16

    Default

    !5.9 year is the right answer

  5. #5
    Join Date
    Oct 2010
    Posts
    19

    Default

    U guies are intelligent
    carry on.

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