1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Maths question help anyone

Discussion in 'BlackHat Lounge' started by realdeal85, Jul 29, 2013.

  1. realdeal85

    realdeal85 Junior Member

    Joined:
    Feb 25, 2013
    Messages:
    171
    Likes Received:
    12
    Hi sorry i have another math question i need help with please.

    -1/8q + 250 = 1/12q + 16 2/3

    I have the answer to q which is q= 1120

    I need to know the steps taken to get to that answer please anyone?
     
  2. mickyfu

    mickyfu Jr. VIP Jr. VIP

    Joined:
    Dec 14, 2011
    Messages:
    6,155
    Likes Received:
    18,160
    Location:
    Solihull Young Offenders
    Ever thought about learning something useful like how to part people from their money online?
     
    • Thanks Thanks x 1
  3. james406

    james406 Junior Member

    Joined:
    Feb 22, 2012
    Messages:
    124
    Likes Received:
    65
    Multiply both sides by 12q.

    Get all values of q onto one side (ie +1.5q to both sides)

    Subtract 16 2/3 from both sides to get all numbers onto the opposite side to q.

    Divide both sides by the coefficient of q (ie 2.5)

    You should have q = 1120 in front of you, if that's correct.
     
    • Thanks Thanks x 2
  4. morgan456

    morgan456 Jr. VIP Jr. VIP

    Joined:
    Nov 26, 2010
    Messages:
    2,338
    Likes Received:
    253
    Gender:
    Male
    Occupation:
    SEO company
    Well this could be the expected solution I think....!


     
  5. innosoft

    innosoft Jr. VIP Jr. VIP Premium Member

    Joined:
    Nov 25, 2008
    Messages:
    1,647
    Likes Received:
    640
    Occupation:
    Software Developer, SEO
    Location:
    Office
    Home Page:
    1/8q + 250 = 1/12q + 16 2/3
    250 = 1/12q+16(2/3)-8q
    250-12q = 32/3-8Q
    250..................................... errrrr cant image more steps :p
     
  6. sn0rt

    sn0rt Elite Member

    Joined:
    Jun 12, 2012
    Messages:
    1,705
    Likes Received:
    3,504
    Occupation:
    "Most obstacles melt away when we make up our mind
    Location:
    "Knowing is not enough; we must apply. Willing is
    pemdas
     
  7. stfrank

    stfrank Jr. VIP Jr. VIP

    Joined:
    Jun 27, 2011
    Messages:
    2,038
    Likes Received:
    1,928
    Home Page:
    Sorry, i cannot help you regarding this.. I was a very very bad at maths.
    If you need any kind of help regarding how to make xx,xxx in 6 months than hit me up i will solve your this problem.
     
    • Thanks Thanks x 2
  8. Naveen257

    Naveen257 Regular Member

    Joined:
    Sep 29, 2012
    Messages:
    294
    Likes Received:
    164
    Location:
    next door
    Can i hit you up as well ? lololol
     
  9. umerjutt00

    umerjutt00 Jr. VIP Jr. VIP

    Joined:
    Oct 28, 2011
    Messages:
    3,769
    Likes Received:
    1,990
    Occupation:
    Ninja
    -1/8q + 250 = 1/12q + 16 2/3

    -1/8q -1/12q = 16(2/3) -250

    -1/8q -1/12q = 32/3 -250

    (-3 -2)/24q = (32-750)/3

    -5/24q = -718/3

    multiplying both sides by -1

    5/24q = 718/3

    5 x 3 = 718 x 24q

    15 = 718 x 24q
    15/718 = 24q
    0.0208 =24q
    .........looks like something is wrong in my calculations....It is hard to do on a laptop. I should have solved on a paper
     
  10. Chang47

    Chang47 Newbie

    Joined:
    Jul 5, 2013
    Messages:
    32
    Likes Received:
    8
    Try going to Wolframalpha, all the math help you'll need there! Helped me all the time!
     
  11. Goal Line Technology

    Goal Line Technology Senior Member

    Joined:
    Dec 30, 2011
    Messages:
    929
    Likes Received:
    2,158
    I did excatly the same as you, and got the same answer.

    Then I gave up the challenge, and decided to find it here.

    The problem as I see it was the OP mentioning -1/8q incorrcectly :)
    -1/8q should have been -q/8

    hence the distorted answers lol

    http://www.wolframalpha.com/input/?i=-1/8q+++250+=+1/12q+++16+2/3+#
     
  12. qrazy

    qrazy Senior Member

    Joined:
    Mar 19, 2012
    Messages:
    1,115
    Likes Received:
    1,721
    Location:
    Banana Republic
    Just for clarity included a lot of steps. but this can be simplified further easily.

    -1/8 q + 250 = 1/12q + 16 2/3

    -1/8 q = 1/12q + 50/3 - 250

    -1/8q = 1/12q + 50/3 - 250

    -1/8q = 1/12q + 50 - 750 / 3

    -1/8 q - 1/12 q = - 700/3

    (-1/8 - 1/12) q = - 700/3

    (-12-8/12*8) q = - 700/3

    (-20/96)q = -700/3

    -20q = -700/3 * 96

    -20q = - 67200/3

    -20q = 22400

    -q = - 22400/-20

    -q = -1120

    q = 1120
     
    • Thanks Thanks x 2
  13. RushingWind

    RushingWind Elite Member

    Joined:
    Apr 6, 2013
    Messages:
    2,416
    Likes Received:
    3,334
    Algebra....my nemesis from high school....
     
  14. lowell1

    lowell1 BANNED BANNED

    Joined:
    Oct 4, 2012
    Messages:
    642
    Likes Received:
    293
    Awesome! Its Solve! Great mate.
     
  15. cryptons

    cryptons Jr. VIP Jr. VIP Premium Member

    Joined:
    Jun 12, 2013
    Messages:
    1,256
    Likes Received:
    451
    Occupation:
    Developer,social marketer
    great such threads on bhw lol!
     
  16. prab1996

    prab1996 Elite Member

    Joined:
    Jan 8, 2013
    Messages:
    3,495
    Likes Received:
    2,030
    Occupation:
    your gf's <3 ♥♥♥♥
    Location:
    Prab1996.com
    Home Page:
    tooo easy question , i not think that you need to post it on bhw to get answer.

    this is right
    i learned it when i was 12 years ;)
     
  17. rydberg

    rydberg Newbie

    Joined:
    Apr 5, 2012
    Messages:
    11
    Likes Received:
    25
    if "16 2/3" means 16 multiplied by 2 thirds, then you got the first step of this is wrong, as 16 * 2/3 is not 50/3.
     
    Last edited: Jul 29, 2013
  18. qrazy

    qrazy Senior Member

    Joined:
    Mar 19, 2012
    Messages:
    1,115
    Likes Received:
    1,721
    Location:
    Banana Republic
    lol dude.. it's 16 + 2/3


     
  19. rydberg

    rydberg Newbie

    Joined:
    Apr 5, 2012
    Messages:
    11
    Likes Received:
    25
    OK, then the plus sign is missing :)
     
  20. CrushL

    CrushL Junior Member

    Joined:
    Jul 4, 2013
    Messages:
    160
    Likes Received:
    46
    Location:
    Global Player
    Just wanted to point out that the upper line is not clear as you wrote it. Not saying it's wrong, just visualy not optimal. I'd add "(" ")" around the part I marked because otherwise you'd normaly do like 50 - (750/3). But I see that this is just a visual problem since normaly you'd write the sum just obove the fraction line. So for the record, this is how I'd put it: -1/8q = 1/12q + (50 - 750) / 3

    Other than that, well done :)

    I think that's only true for letters like 16q. At least I have never seen something like 15 6 42 2 that actually meant 15 * 6 * 42 * 2. So I'd say 16 2/3 actually means one number (16.6666666666666666666666666666666666... looks so stupid...), to be exact 16+2/3 .
     
    Last edited: Jul 29, 2013