Results 1 to 4 of 4
Like Tree2Thanks
  • 1 Post By chiro
  • 1 Post By chiro

Math Help - Simple question - need an explaination

  1. #1
    Junior Member
    Joined
    Oct 2011
    Posts
    27

    Simple question - need an explaination

    Hello,

    I been working through a set of excrise and I hit the problem

    7/12 = ?%

    And this is now it gets solved

    => 7/12 * 100
    => 700/12
    => 58 * 12 + 4 / 12
    => 58 4/12%
    => 58 1/3%

    I see how its worked out, but however what I dont understand is this ( 58 * 12 + 4) / 12. Looking at it I can understand how 58 * 12 got derived. 700/12 will give 58.3. Following that the 12 in the numertor disappeares. I need to understand how? The only way i can think of doing that is striking of 12 from both numerator as well as in the denominator. But doing that it wont derive me 58 4/12%
    I know its a simple question. I'm sure I would get an answer to it

    Thanks!

    ssharish
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    4,165
    Thanks
    762

    Re: Simple question - need an explaination

    Hey ssharish.

    Basically what they have is factor 700 into 12. Doing so gives 700/12 = 58 remainder 4 or in other words: 700 = 58*12 + 4.

    Doing a substitution we get:

    700/12 = (58*12 + 4)/12 = 58 + 4/12.
    Thanks from ssharish
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Oct 2011
    Posts
    27

    Re: Simple question - need an explaination

    Chiro,

    Thanks very much for the reply. I undertstand the substitution part.

    (58*12 + 4) / 12

    How does this gets simplified so easily to

    => 58 4/12? This is what I dont understand.

    ssharish
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    4,165
    Thanks
    762

    Re: Simple question - need an explaination

    Basically it uses the rule that (a+b)/d = a/d + b/d.
    Thanks from ssharish
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. in detail explaination
    Posted in the Discrete Math Forum
    Replies: 3
    Last Post: July 21st 2009, 01:31 PM
  2. A quick explaination
    Posted in the Calculus Forum
    Replies: 4
    Last Post: June 9th 2009, 03:02 AM
  3. region R - need your explaination.
    Posted in the Calculus Forum
    Replies: 2
    Last Post: November 20th 2007, 09:40 PM
  4. Factorising explaination
    Posted in the Algebra Forum
    Replies: 4
    Last Post: October 3rd 2007, 09:23 PM
  5. I need and explaination
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: February 9th 2007, 09:45 PM

Search Tags


/mathhelpforum @mathhelpforum