Activity	Predecessor	Normal time (weeks)	Normal cost ($)	Crash time (weeks)	Crash cost ($)	Cost Slope	Weeks to decrease /crashable slope
A	-	3	50	1	100	25	2
B	A	6	80	2	120	10	4
C	A	10	60	5	150	18	5
D	B,C	11	50	6	150	20	5
E	B,C	8	100	4	200	25	4
F	E	5	40	2	70	10	3
G	D,F	6	70	2	110	10	4

Critical Path : A-C-E-F-G. Total Project Time: 32 Weeks. Normal Cost: 450. Use the above information to solve the following questions:

a. Reduce the project duration to 26 weeks at minimum cost? What is the critical path and cost?

b. Reduce the project duration to 23 weeks at minimum cost? What is the critical path and cost?

c/ what is the minimum and maximum number of activities to be crashed to reduce a 1-day duration on the project?

d/ what is the total number of activities (and what are those) and how many crashing steps need to be done to reduce the project to 24-weeks duration?