Brain Teaser #112 | FerrariChat

Brain Teaser #112

Discussion in 'Other Off Topic Forum' started by UroTrash, Aug 9, 2004.

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  1. UroTrash

    UroTrash Four Time F1 World Champ
    Consultant Owner

    Jan 20, 2004
    40,702
    Purgatory
    Full Name:
    Clifford Gunboat
    Calling all maths geniuses out there .............

    A mother is 21 years older than the child. 6 years from now the mother
    will be 5 times as old as the child.

    Question : Where's the father?



    Try first, before you check the answer below.






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    Solution:

    The mother is 21 years older than the child.

    M = C + 21

    In 6 years from now the mum will be 5 times as old as the child.

    M + 6 = (C + 6) x 5

    Hence,

    C + 21 + 6 = (C + 6) x 5

    C + 27 = 5C + 30

    -3 = 4C

    C = -3/4



    The child is -3/4 years old, that is, it'll be born in 9 months.

    Thus.. by mathematical deduction....

    Right now, the father is on top of the mother...
     
  2. zach_300zxTT

    zach_300zxTT Formula Junior

    Nov 28, 2003
    286
    Clemmons, NC
    Full Name:
    Zach Lindsey
    Haha...nice.
     
  3. tonyh

    tonyh F1 World Champ
    Lifetime Rossa Owner

    Dec 23, 2002
    14,372
    S W London
    Full Name:
    Tony H
  4. Ed P.

    Ed P. Formula 3

    Dec 28, 2002
    2,177
    Long Island
    Full Name:
    No Longer
    That was an easy one..... (yeah right) :)
     
  5. infraredline

    infraredline Formula 3

    Mar 15, 2004
    1,036
    San Francisco
    Full Name:
    John
    I was gonna say pouring drinks. =)
     

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