Simple Math Question

Discussion in 'Physics & Math' started by deicider, Mar 1, 2011.

  1. deicider got omnicidead Registered Senior Member

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    What is the Cost of a book that costs 1$ plus half of its price?
     
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  3. adoucette Caca Occurs Valued Senior Member

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  5. deicider got omnicidead Registered Senior Member

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    how sure are you?
     
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  7. EmptyForceOfChi Banned Banned

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    1.50 .....
     
  8. EmptyForceOfChi Banned Banned

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    (-_-)
     
  9. keith1 Guest

    Let us find out for sure, by proof:

    The total unknown (x), = one half of the total (x/2), plus one dollar (1)

    That is:
    x=(x/2)+1

    We'll use that equation to prove that:
    x=2

    So:
    2=(2/2)+1
    2=1+1
    2=2

    If 2=2 is correct, then x=2 is also correct.
    If x=2 is correct, then Arthur is correct.
    Arthur is correct.
     
  10. Emil Valued Senior Member

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    Cost is more or equal one dollar.

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  11. EmptyForceOfChi Banned Banned

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    The cost was 1$ regardless of howmany times "cost" was said. the only price mentioned was 1$ so half of that would be 50. The only other possible answer could be the "half" means an over all half to be added of the total again after the first, but that would be stupid >_>


    I don't see x=2
     
  12. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    No.

    Then read Keith1's post. It's quite simple.

    Your claim of $1 fails:
    The question was What is the Cost of a book that costs (1$ plus half of its price)?
    I've added the brackets to make it clearer for you.
    If, as you claim, it's $1 then half it's price is 50 cents, making the overall cost $1.50.
    $1.50 != $1.

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  13. EmptyForceOfChi Banned Banned

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    :shrug:
     
  14. siphra Registered Senior Member

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    It was already done, but in algebra (Again)...

    x= 1/2(x)+1
    x - 1/2 (x) = 1
    1/2 x = 1
    x = 2
     
  15. deicider got omnicidead Registered Senior Member

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    Are you 100% convinced?
     
  16. Emil Valued Senior Member

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    But if you make a reduction to a store where the cost is half the price plus 1$?

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  17. Tach Banned Banned

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    This is a rather deceptive problem statement. The answer is 1.5$.
     
  18. siphra Registered Senior Member

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    The cost of the book is $1 + 1/2cost .

    You surmise that the cost of the book is $1.50
    well half the cost of the books would then be .75 and

    $1.75 != $1.50

    so 1.5 is the wrong answer

    Now lets look at it again with $2 being the answer

    half the price of the book would then be $1
    $1+1$ = $2

    verified.


    Yes I am positive the answer is $2
     
  19. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Half of $1.5 is 75 cents. $1 + 75 cents is $1.75.
    $1.50 != $1.75.
     
  20. siphra Registered Senior Member

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    Just want to gloat that for the first time in these threads I beat someone to the punch.
     
  21. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Then you'll have to wait.
    Look at the time stamps on our posts... they're simultaneous.

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    And I'm sticking to that.
     
  22. deicider got omnicidead Registered Senior Member

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    Lemme give a hint for the ones that are struggling.
    Its definitely not 1.5.

    Its one dollar PLUS half of the TOTAL price.
    If the price was 1 dollar then the answer would be 1.5 but its not.
     
  23. siphra Registered Senior Member

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    Should the thread have been named "Complicated Math Problem"?
     

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