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 $150 per day. The company will incur a $100 per day penalty for each day the project lasts beyond day 15. Activity Normal Time Normal Cost (5) (days) Crash Time (days) Crash Cost Immediate Predecessor(s) ($) 800 1,000 600 AB ??????? OG AN 1.200 2,200 900 2,000 1,300 1,400 1,200 1.000 1,300 900 500 ?? 900 ??? ??? 900 a. What is the project's duration if only normal times are used? The project duration is 22 day(s). (Enter your response as an integer.) b. What is the minimum-cost schedule? With the minimum-cost schedule, the project duration is day(s). (Enter your response as an integer)