Based on the given table below, answer the questions. (25 points)

Show all calculation steps in the answers

CPM is A C E F G

			Direct Costs
Activiy	Slope	Max.	Normal		Crash
ID		Crash Time	Time	Cost ($)	Time	Cost ($)
A			6	110	3	170
B			7	160	3	280
C			13	120	10	210
D			15	120	11	240
E			6	200	4	230
F			11	80	7	180
G			8	120	5	240

a) Calculate the Max. crash time and slope (10 points)

b) Crash the project for 8 weeks, calculate the total cost before and after crashing (15 points)