Results 1 to 2 of 2

Math Help - Dont understand the explanation

  1. #1
    Newbie
    Joined
    Jan 2013
    From
    United Kingdom
    Posts
    6

    Dont understand the explanation



    When the sale prices of Calir's product line were decreased by 25%, 65,277 in revenues were generated in less than 2 weeks. If the sales ratio of XC to XR units was 3:4 respectively, what is the difference in the number of units sold between the two product types?
    A
    5
    B
    18
    C
    6
    Close |
    Explanation
    Remember that ratios do not represent real numbers. We need to find the multiplication factor which connects us to the real numbers.

    Let's look at the entire mathematical expression that represents the data and the solution:

    0.75*( 1734*3X + 2326*4X)= 65,277

    0.75 is the 25% price reduction that applies on both products.
    1734 and 2326 are the prices of XC and XR units, repsectively.
    X is the multiplication factor that tells us the real numbers of units sold, in stead of just the ratio. In fact, it is also the difference we're looking for.

    Solving this gives us x=6. When applying the multiplication factor to the basic ratio we get:
    3*6= 18 units of XC
    4*6=24 units of XR
    Where does 6 come from???
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,857
    Thanks
    321
    Awards
    1

    Re: Dont understand the explanation

    Please do not double post.

    -Dan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. please help i dont really understand this!
    Posted in the Business Math Forum
    Replies: 1
    Last Post: September 7th 2010, 05:24 PM
  2. Replies: 2
    Last Post: July 14th 2010, 10:26 PM
  3. plz help me i dont understand...
    Posted in the Algebra Forum
    Replies: 1
    Last Post: September 30th 2008, 05:10 PM
  4. What I dont understand is
    Posted in the Calculus Forum
    Replies: 2
    Last Post: March 31st 2008, 06:57 PM
  5. I dont understand this..
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: August 18th 2007, 04:48 PM

Search Tags


/mathhelpforum @mathhelpforum