48÷2(9+3) = ??

Discussion in 'Odds & Ends' started by accidental, Apr 7, 2011.

?

What is the answer?

  1. 2

    243 vote(s)
    50.9%
  2. 288

    234 vote(s)
    49.1%
  1. accidental

    accidental Professional

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    What is the answer?
     
    #1
  2. FedExpress 333

    FedExpress 333 Professional

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    The answer is two.
     
    #2
  3. sureshs

    sureshs Bionic Poster

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    288 ................
     
    #3
  4. Breaker

    Breaker Legend

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    2 assuming the 2(9+3) is the divisor.

    48/2(12) = 48/24 = 2..
     
    #4
  5. accidental

    accidental Professional

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    #5
  6. Sintherius

    Sintherius Rookie

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    Use PEMDAS
    Parenthesis
    Exponents
    Multiplication
    Division
    Addition
    Subtraction

    Do (9+3) which is 12, then multiply (since the 12 is still in parenthesis) by 2, which is 24.

    48/24= 2.
     
    #6
  7. sureshs

    sureshs Bionic Poster

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    Interesting. Sometimes people say multiplication takes precedence over division in such cases, but in computer languages these days, they go left to right.
     
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  8. Sintherius

    Sintherius Rookie

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    The division and multiplication can interchange at any time, it doesn't matter the order.
     
    #8
  9. Devilito

    Devilito Hall of Fame

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    gradeschool math

    48 ÷ 2 x (9+3)
    48 ÷ 2 x 12
    24 x 12 = 288

    next?

    lol yes it does. It's left to right
     
    #9
  10. Manus Domini

    Manus Domini Hall of Fame

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    Is it 48/(2(9+3)) or (48/2)*(9+3)?
     
    #10
  11. rdis10093

    rdis10093 Hall of Fame

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    this is so sad
     
    #11
  12. OHAI

    OHAI Rookie

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    haha

    my answer is 2!

    If that's wrong I give up on life.
     
    #12
  13. rdis10093

    rdis10093 Hall of Fame

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    no, you have to do the () first, please stay alive OHAI, don't do it!
     
    #13
  14. tenis1

    tenis1 Banned

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    This is correct.
     
    #14
  15. fluffy Beaver

    fluffy Beaver Professional

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    well now I know why posters make some of the dumbest discussions.
     
    #15
  16. OHAI

    OHAI Rookie

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    You mean Please Excuse My Dear Aunt Sally failed me?

    Math never was my strong subject.

    :-|
     
    Last edited: Apr 7, 2011
    #16
  17. rdis10093

    rdis10093 Hall of Fame

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    what the @#$% the poll keeps going in the wrong direction, it is 288 guys not 2 stop this thread now. You are just embarrasing yourselfs
     
    #17
  18. Manus Domini

    Manus Domini Hall of Fame

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    Because the way it looks, it is 48/(2(9+3)), which = 2.

    It is how you see it
     
    #18
  19. krz

    krz Professional

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    The way it's written it's 288... I was applied math and economics in school. If not, what a waste of an education.

    I'm not sure how matlab got it wrong. Excel agrees with 288, so does google.

    Parentheses first then left to right on the multiplication/division.

    48/2(9+3) = Parentheses
    48/2*12 = Left to Right
    24 * 12 = 288

    48/(2(9+3))= 2

    This is like 6th grade math...
     
    Last edited: Apr 7, 2011
    #19
  20. fluffy Beaver

    fluffy Beaver Professional

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    Seems many have not learned about distribution.
     
    #20
  21. Manus Domini

    Manus Domini Hall of Fame

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    Yeah, and I distribute to get 2
     
    #21
  22. rdis10093

    rdis10093 Hall of Fame

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    who, back on track 8-8
     
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  23. fluffy Beaver

    fluffy Beaver Professional

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    Yeah, others apparently have never learned about it.
     
    #23
  24. tennisP1ayer002

    tennisP1ayer002 New User

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    I'm pretty sure its 288 since the 2 is not bracketed with (9+3) and division comes before multiplication.
     
    #24
  25. rdis10093

    rdis10093 Hall of Fame

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    this is so bad, I am taking high level calc classes in college. I swear to all of you on my future education, the answer is 288
     
    #25
  26. Photoshop

    Photoshop Professional

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    the order of operations is that you do what's in the parenthesis first. then if there's multiplication and division, you assume the left-to-right interpretation unless there's another parenthesis.

    answer is 288. 2 is incorrect.

    Is this the 1st time fluffy beaver is wrong? :D thought he was always right... :(
     
    #26
  27. stapler

    stapler Professional

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    Answer is 288, don't accept answers from idiots.
     
    #27
  28. SuperDuy

    SuperDuy Hall of Fame

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    Answer is 288, if it was
    48÷((2(9+3)) then it would
    be 2.
     
    #28
  29. krz

    krz Professional

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    ...48÷2(9+3) distribute?

    48/18+6 = The parentheses disappear after you distribute which is wrong anyway.

    Put it into Excel, google or a calculator exactly how it is written. It's 288.
     
    #29
  30. Sintherius

    Sintherius Rookie

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    You guys are IDIOTS. PEMDAS IS NOT WRONG.

    When you add 9 and 3, you get 12. THE PARENTHESIS ARE STILL THERE SO THE PROBLEM THEN BECOMES 48 / 2(12)

    PARENTHESIS FIRST.

    THE ANSWER IS 2
     
    #30
  31. rdis10093

    rdis10093 Hall of Fame

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    anyone that thinks or tries to argue that the answer is 2 should get a Referral. tennis is a gentlemen's sport. men should be educated. please stop going with 2 on the pull. I must end this
     
    #31
  32. krz

    krz Professional

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    So google, calculator and excel are wrong?

    please post your education background along with your answerers please.
     
    #32
  33. Devilito

    Devilito Hall of Fame

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    [​IMG]
     
    #33
  34. fluffy Beaver

    fluffy Beaver Professional

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    I'll say it again, distribution comes first.

    For example adding a variable.

    48÷2(9x+3) = 1 >> 48÷(18x+6) = 1 >> 48 = 18x + 6 >> 42 = 18x >> 42/18 = x = 2 1/3.

    Now we obviously can't add (9x + 3) together because of the variable, but we also wouldn't want to do 48÷2 first because the parenthesis should technically comes first, so we distribute the 2. So even if the 'x' wasn't there, it's the same concept.

    PS: 2(9+3) = 24

    and

    2(9+3) = (18 + 6) = 24
     
    #34
  35. Devilito

    Devilito Hall of Fame

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    48 ÷ 2(9+3)

    Is Not The Same As

    48 ÷ (2(9+3))
     
    #35
  36. fluffy Beaver

    fluffy Beaver Professional

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    Solve my example with the variable with your method and see if it equals 1 when you plug your answer into x. Please show your work.
     
    #36
  37. Sintherius

    Sintherius Rookie

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    Thank you.
     
    #37
  38. krz

    krz Professional

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    That's just plain wrong. Even an 11 year old knows that multiplication and addition are commutative. While subtraction and division are not.

    Can someone please explain how excel, google, and the calculator are wrong?
     
    #38
  39. fluffy Beaver

    fluffy Beaver Professional

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    Well then, can you explain how Matlab is "wrong" from google, excel, and the calculator.

    Obviously one or the other is wrong and I'd go with Matlab being correct.
     
    #39
  40. freeez

    freeez New User

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    my 13 yr old daughter has come to the conclusion that half of you need to get back to school. The answer is 288.

    BEDMAS

    Brackets
    Exponents
    Division
    Mulitplication
    Addition
    Subtraction

    She is in enriched math.
     
    #40
  41. Sintherius

    Sintherius Rookie

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    You didn't understand what I meant. I mean that you can do the multiplication BEFORE the division, or vice versa UNLESS there are parenthesis or exponents involved. Such as in this problem.
     
    #41
  42. baek57

    baek57 Professional

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    You know it's funny people are calling each other idiots. What's even funnier are the ones who are wrong doing the name calling. This is really elementary math. The answer is 2.
     
    #42
  43. fluffy Beaver

    fluffy Beaver Professional

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    All I can say is I at least tried to show work and explain my steps. If someone wants to do the same with a better explanation to prove us wrong I'd be happy to say I was wrong. But all the shouting with no proof isn't helping.
     
    #43
  44. Sintherius

    Sintherius Rookie

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    Thank God somebody else understands.
     
    #44
  45. Devilito

    Devilito Hall of Fame

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    so in your world
    48 ÷ 2 x 12 = both 2 AND 288?
    amazing. Utterly amazing. The American education system at work here folks

    there are only so many times i can post the Simple Jack pic. In your case i should make an exception
     
    #45
  46. rdis10093

    rdis10093 Hall of Fame

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    PEMDAS
    () first then work left to right
    48/2=24x12=288
     
    #46
  47. rdis10093

    rdis10093 Hall of Fame

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    I think I am having a stroke
     
    #47
  48. Devilito

    Devilito Hall of Fame

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    people will still think the answer is 2. There are no more ways to break it down for them
     
    #48
  49. fluffy Beaver

    fluffy Beaver Professional

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    Well another way to look at it is

    48÷2 = 24x12 = 288 and
    48x12 = 576÷2 = 288.

    I'd assume left to right still applies in this.
     
    #49
  50. AllLeague

    AllLeague Rookie

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    I'm pretty sure it's 288.
     
    #50

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