$4)$ Some data is given about a Project below :

Life: $3$ years

Cost of Project now: $100$

Cash inflows for next $2$ years is $100$ Tl every year.

However, at the end of the second year he has to spend $200$ Tl for the repairs

a$)$What is the profitability of the Project? Calculate it$.$

b$)$How will he decide on the Project?