What is your purchasing decision in the following case, i.e., how many machines to purchase, what type of machine, and what is the total investment? You can only select one type of machine. Show all your work/calculations.

There are three alternative machines to perform a process, machines type A, B, or C.

Machines operate 15 hours per day, 250 days per year. The cost per machine, processing times per unit, and demand per year are given in the following table.

	Processing time (minutes/unit)
Product	Machine A	Machine B	Machine C	Demand (units)
#1	7	4	5	20,000
#2	10	5	7	25,000
#3	8	6	7	30,000
Cost (USD) per machine:	$40,000	$50,000	$55,000