You make three kinds of computers. Cheap, Good , and Deluxe. These sell for $1500, $2000, and $2800. The Cheap model requires 3 hours for circuit board installation and 1 hour to fit the peripheral equipment. The Good model requires 1 hour for circuit boards and 5 hours for peripheral equipment. The Deluxe model requires 3 hours for circuit boards and 2 hours for peripherals. You have 120 hours available for circuit board work and 60 hours for fitting peripherals. Determine:

A) How much of each kind of computers you should make to maximize your revenue

B) How much revenue you'll make at the maximum

C) How much it would be worth to you to get another hour of circuit board assembly time or peripheral fitting time?