A small manufacturer makes two types of motors, models A and B. The assembly process for each is similar in that both require a certain amount of wiring, drilling, and assembly. Each model A takes 3 hours of wiring, 2 hours of drilling, and 1.5 hours of assembly. Each model B must go through 2 hours of wiring, 1 hour of drilling, and 0.5 hours of assembly. During the next production period, 240 hours of wiring time, 210 hours of drilling time, and 120 hours of assembly time are available. Each model A sold yields a profit of $22. Each model B can be sold for a $15 profit. Assuming that all assembled motors can be sold, find the best combination of motors to yield the highest profit.

The above questions involve only two decision variables. Therefore, at the discretion of the instructor, it can be solved using the graphical method, Excel, or both.