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A company wants to bid on an order of 20,000 square based boxes which hold 5 cubic feet. The cardboard cost is $.15 per square foot. The boxes must be reinforced with an extra layer of cheaper cardboard on the bottom ($.12 per square foot). The box is held together with tape on all four edges and one side edge. There is also one edge along the top which is taped to create a hinge. It cost $.10 per linear foot to tape edges.

1. Write a function for the cost of a box based on the length of the base.
2. Graph your cost function.
3. What should the dimensions of the box be in order to minimize the cost?
4. How much will it cost to make the 20,000 boxes?
5. If the company wants to make 15% what should they bid?

Question ID
524754

Created
April 3, 2011 7:56pm UTC

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0

URL
https://questions.llc/questions/524754

Answers
5

Views
377

5 answers

  1. Which step are you having difficulty with?Doing them in sequence should give you all you need.

    Answer ID
    524767

    Created
    April 3, 2011 8:11pm UTC

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  2. I am having difficulty coming up with the right function. The rest should fall into place, I know.

    Answer ID
    524776

    Created
    April 3, 2011 8:27pm UTC

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    0

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  3. area = 2 ends + 2 sides +extra bottom+ bottom+ edge+top this assumes top,two bottoms, and four sides. I assume the four edges mentioned are the three bottom edges, and one side edge.

    cost=area*cost/srea= 2*h*w*.15+ 2*h*l*.15+ l*w*.15+l*w*.12+ w*l*.15 +.10(2w+h+l+w)

    simplify that into a function of l,w,h

    Then volume=5=lwh and you can solve h=5/lw

    check carefully the area and cost function. A sketch of the box might help. I assume the bottom was hinged on one side, taped on three sides, then tape on one height side, and finally, tape for a folding lid. Weird box.

    Answer ID
    524798

    Created
    April 3, 2011 8:58pm UTC

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    0

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  4. remember it is square, so w=l

    Answer ID
    524799

    Created
    April 3, 2011 9:02pm UTC

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  5. That is what I came up with for my function. It just didn't seem to work out right when I went to solve. I will have to go back and check my math. Thank you for your help!!!

    Answer ID
    525006

    Created
    April 4, 2011 1:06am UTC

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    0

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