The Advanced Tech Company has a project to design an integrated information data base for a major bank. Data for the project are given in the following table Indirect project costs amount to $250 per day. The company will incur a $200 per day penalty for each day the project lasts beyond day Activity Normal Time (days) Normal Cost (s) Crash Time (days) Immediate Predecessors) 800 1.100 600 1,200 1,500 1,300 900 500 AB Crash Cost (5) 1.000 2.900 900 2.000 1.700 1.400 NNNN 900 800 a. What is the project's duration if only normal times are used? The project duration is day(s) (Enter your response as an integer)