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Interpreting LINDO Output in Linear Programming Optimization

Based on the attached file, please anwer:

a. Give the complete optimal solution
b. What constraints are binding?
c. What would happen if the coefficient of X1 is increased by 6?
d. What would happen if the right-hand-side value of constraint 1 decreased by 10?
e. Which right-hand-side would you be most interested in increasing? Why?

The attached file (.JPG) format is a study question that is used as a "Do it on your own" type of exercise. I'm learning how to use the LINDO software right now.

The answers I came up with were as follows:
a. 30(0)+25(66)+22(0)+20(42)=0+1650+0+840=2490
b. not sure-- how can I tell?
c. The solution would have to be recalculated because the allowable increase for coefficient of X1 is limited to 5.5. (But I don't know if that's a complete answer???)
d. There would be no effect on the optimal solution because the allowable decrease for the right-side range is infinity. (But I don't know if that is a complete answer???)
e. I'm not sure... how can I tell?

If you would please provide the correct answers, it would help my studies. Thank you. It should be an easy interpretation for anyone who is familiar with the software.

Thank you,



Solution Summary

LINDO output is interpreted.