QZY, Inc. is evaluating new widget machinesoffered by three companies. The machines have the following characteristics:
A B C
First cost $15,000 $25,000 $20,000
Maintenance and operating 1,600 400 900
Annual benefit 8,000 13,000 9,000
Salvage Value 3,000 6,000 4,500
Useful life in years 4 4 4
a) Construct a choice table for interest rates from 0% to100%
b) MARR = 15% From which company, if any should you buy the widget machine? Use rate of return analisys.