PROFITABILITY EVALUATION okeY to PROFITABLITY ANAL YSIS E RETURN ONINVESTMENT keY tO RETURN ON INVESTMENT E TIME VALUE OF MONEY 10/1599 Engineering economics 1 310/15/99 Engineering Economics 1 3 PROFITABILITY EVALUATION t KEY to PROFITABLITY ANALYSIS ð RETURN ON INVESTMENT uKEY to RETURN ON INVESTMENT ð TIME VALUE OF MONEY