an expenditure of $600000 is made to introduce the building information modeling system to improvve the process of delivering shop drawing within the contractor.

this improvement will result in first year saving$60000

second year saving of $120000 and a saving of $150000 per year therafter.

How many years must the system last if an 18% return on the investment is required?

2 An expenditure of $600,000 is made to introduce the Building Information Modeling (BIM) system to improve the process of delivering shop drawings within the contractor. This improvement will result in first-year saving of $60,000, a second-year saving of $120,000, and a saving of $150,000 per year thereafter. How many years must the BIM system last if an 18% return on investment is required? Market value is not considered at any time. (20%) * hint: list the equation and find the reasonable and closest number of years by trial-and-error