Here is the table to answer 4 and 5.

Activity Crash Potential Cost/day Activity Crash Potential Cost/day A 2 $2,000 G 0 $0 B 4 $3,000 H 2 $1,500 C 2 $2,000 I 5 $1,300 D 4 $1,200 J 3 $2,000 E 2 $1,000 K 4 $2,500 F 2 $1,500 L 2 $1,200

However, I cannot figure out how to answer 4 and 5. I am trying to compute it on Excel and not coming up with the right figures.4. The client wants the audit to be completed within 57 days. Build an LP optimization model and determine the optimal crashing schedule. Also, calculate the additional budget required to satisfy the clients request? 5. Suppose, the client wants to complete the audit as quickly as possible due to an impending merger and has offered a reward of $4000 for every day Cost-a-lot can reduce from the total audit time. What should be the new crashing schedule and the corresponding cost? Here are my results from answers 1-3.

Activity	Duration	Predecessors	ES	EF	LS	LF	Slack	CP
A	12		0	12	0	12	0	Yes
B	16		0	16	5	21	5	No
C	13	A	12	25	12	25	0	Yes
D	14	A	12	26	15	29	3	No
E	9	A	12	21	12	21	0	Yes
F	14	C	25	39	25	39	0	Yes
G	8	B,E	21	29	21	29	0	Yes
H	10	C,D,E	26	36	29	39	3	No
I	25	C,D,G	29	54	29	54	0	Yes
J	12	F,H	39	51	42	54	3	No
K	23	F,H	39	62	39	62	0	Yes
L	8	I,J	54	62	54	62	0	Yes