Question

A system is modeled with: Profit f(x, x,, x) g(x, x, x) s a h(x, x, x)s b y(x, x, x)sc a, b and c are constraints. The results of model runs to find the optimum values of x, x, and x, are shown below: $5000 $5000 4 $5000 10 10 10 12 $5200 6 19 What is the value of increasing constraint "a" by 1 unit from 10 to 11 when "b" is held at 11 and "c" at 6? (A) $200 (B) $100 (C) $O (D) It cannot be determined 20 What is the value of increasing constraint "c" by 1 unit from 6 to 7 when "b" is held at 11 and "a" at 10? (A) $500 (B) $100 (C) $O (D) It cannot be determined 21 If you could only focus on relieving one system constraint which one should it be? (A) a (B) b (C) С (D) They are all the same

23) When comparing two alternative designs – A and B - it is best done by:

1.     Comparing the projected first two years of operation
2.     Comparing the maintenance costs only
3. Comparing them over the life cycle of the design
4. Comparing the “time zero” capital costs only

    None of the above

Answer 1

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