Results 1 to 2 of 2

Math Help - Grade 11 Practice Exam Math Question

  1. #1
    s3a
    s3a is offline
    Super Member
    Joined
    Nov 2008
    Posts
    597

    Grade 11 Practice Exam Math Question

    Can someone explain to me how to do #12 please?
    Attached Thumbnails Attached Thumbnails Grade 11 Practice Exam Math Question-0008.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Grandad's Avatar
    Joined
    Dec 2008
    From
    South Coast of England
    Posts
    2,570
    Thanks
    1

    Maximum profit

    Hello s3a

    The maximum profit will occur at one of the vertices of the shaded polygon. You could begin by sketching on the graph a profit line, choosing a suitable value of P; e.g. P = 60 giving x + 3y = 60. Then any other profit line will be parallel to this one, and so you then move the line up the graph until it is at its highest point while still retaining at least one point within the shaded area.

    However, in this example, the easiest way to find out which vertex is best is probably by trial and error, since the arithmetic is simple. The only realistic possibilities are (60, 40) and (100, 0). So:

    • At (60, 40) he sells 60 bags of coffee and 40 boxes of chocolate. How much profit should he make? How much did he actually make?
    • Repeat for (100, 0).
    • Choose the best one. Don't forget to answer the question: write down the decrease in his earnings.

    Grandad
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. SAT Practice Exam
    Posted in the Math Software Forum
    Replies: 0
    Last Post: January 8th 2010, 03:14 PM
  2. Math Grade 11 Question (Step Function)
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: January 11th 2009, 01:19 PM
  3. need help with grade 12 finite math question
    Posted in the Algebra Forum
    Replies: 2
    Last Post: December 18th 2008, 07:35 PM
  4. Replies: 1
    Last Post: June 21st 2008, 07:53 PM
  5. 5 Question from Practice Exam, Please Help Me!
    Posted in the Advanced Applied Math Forum
    Replies: 0
    Last Post: April 30th 2008, 11:38 PM

Search Tags


/mathhelpforum @mathhelpforum