What is the number of days required to complete the standard work in the project below, and by how many days can it be s

[answerhappygod]

What is the number of days required to complete the standard
work in the project below, and by how many days can it be shortened
if an additional budget of $200,000 is allowed for shortening the
schedule using an optimized process?
Activity
Precedence
Required time (days)
Cost ($1,000)
Standard
Optimized
Standard
Optimized
A
B
C
D
E
F
G
H
I
-
-
A
A
B
D,E
D,E
C,F
G
14
12
16
13
13
16
15
12
12
10
6
12
10
10
12
11
8
6
70
60
160
65
260
160
75
240
180
110
90
240
125
350
260
95
360
240