Two processes can be used for producing a polymer engines: r that reduces friction loss t reduce Annual operating cost, BD BD130,000 BD65,000 BD400 000- 275,000 Determine At an interest tate of20% per year, which proccss should be selected on the bases of present worth analysis, find the LCM? a. b. At an interest rate of 20% per year, which proccss should be selected on the bases of present worth analysis over 'a study period of 11 years