please solve

Question 1: A county courthouse has decided to hire security after a few incidents have left judges and prosecutors concerned about their safety. The courthouse would like one guard per entrance, or 85 hours per week (one door is open 30 hours/week, one for 55 hours/week). Guard duty is not seasonal. Full-time guards can work up to 40 hours per week, 48 with overtime pay (which you would want to avoid, usually). They get two weeks of vacation per year and up to 21 days of sick leave. Part-time guards can only work up to 20 hours/week. Write a short (one-paragraph) response that justifies how many guards you would hire