Chase Business College Offers the Following Computer Continuing Education Courses

Chase Business College offers the following computer continuing education courses: $$\begin{array} { | l | l| r | l r | l r | } \hline & \text { Course A } & { \text { Course B } } & { \text { Course C } } \\\hline \text { Total student fees } & \$ 90 & \$ 150 & \$ 120 \\\hline \text { Variable costs } & \$ 40 & \$ 60 & \$ 50 \\\hline \text { Course length } & 2 \text { hours } & 5 \text { hours } & \text { 4 hours } \\\hline\end{array}$$ Required:
1)Assuming the college has limited computer lab time available,which course should it first select to offer?
2)How many sections of each course should be offered if the college has paid for 100 hours of computer lab time in a nearby convention center and that the demand for each course is as follows: A,20 sections;B,15 sections;and C,10 sections.
3)Compute the profit from the three courses assuming the college paid $1,000 for the 100 hours of computer lab time and it offers the sections you recommended in Requirement 2.