Make sure you have studied my strategies for solving Word Problems discussed in Lesson 3 of my book and also exemplified by Lesson 4, questions 4 and 5 in the Lecture Problems.
Be sure you clearly define all the variables you use, and don't forget to say x > 0, etc.
Obviously, you will also need to study Lesson 5, question 2 for another word problem example and use of the Simplex Method. Do note that they only require you write the very first Simplex Table, as I illustrate in Lesson 5. You do not solve this
problem.