Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

I have question&its solutiion but how?in LP

  1. Mar 19, 2009 #1
    Blending problem:
    Decision variables
    x1: tons of ore from mine 1 in each ton of the blend
    x2: tons of ore from mine 2 in each ton of the blend
    x3: tons of ore from mine 3 in each ton of the blend
    x4: tons of ore from mine 4 in each ton of the blend
    Objective function
    Min cost
    Min 800x1+400x2+600x3+500x4
    Element A: 10x1+3x2+8x3+2x4>=5
    Element B: 90x1+250x2+75x3+175x4>=100
    Element C: 45x1+25x2+20x3+37x4>=30
    Weight: x1+x2+x3+x4=1

    If you know that Element B has slack of 31.666
    there is a question
    what is the amount used of element B?compute it

    i found a solution please if it is right can anyone explain it to me


    therefore the amount used =131.66

    Can anyone Explain it to me?
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Threads - question&its solutiion Date
I Question about simplifying Sigma notation Feb 11, 2018
I Shopping List Game: Probability Question Dec 10, 2017
I A simple question about probability theory Aug 2, 2017
B Correlation question Jun 20, 2017