Engineering Economy 7th Edition by Leland Blank ,Anthony Tarquin

Exercise 11

A group of engineers responsible for developing advanced missile detection and tracking technologies, such as shortwave infrared, thermal infrared detection, target tracking radar, etc., recently came up with six proposals for consideration. The present worth (in $ billions) of the capital requirements and benefits is shown for each alternative in the table. Determine which one(s) should be undertaken, if they are (a) independent and (b) mutually exclusive.