14. what is the minimum cost of crashing the following project by one day?

Activity	Immediate Predecessor	Normal Time	Normal Cost	Crash Time	Crash Cost
A	-	6 days	$900	5 days	$1000
B	-	8 days	$300	6 days	$400
C	-	4 days	$500	3 days	$600
D	A	5 days	$900	3 days	$1200
E	C	8 days	$1000	5 days	$1600

A) $50

B) $100

C) $150

D) $200

E) $1100

15. Based on the manufacturing process describe in this diagram what is the pace of the process:

23 min/unit 84min/unit 84min/unit 27 min/unit 84 min/unit 20 min/unit .' welding 25 min/unit