Rich Cole Control Devices, Inc., produces custom-built relay devices for auto ma
ID: 3069119 • Letter: R
Question
Rich Cole Control Devices, Inc., produces custom-built relay devices for auto makers. The most recent project undertaken by Cole requires 14 different activities. The appropriate data are shown in the following table:
Time (days)
Immediate
Time (days)
Immediate
Activity
a
m
b
Predecessor(s)
Activity
a
m
b
Predecessor(s)
A
55
55
77
long dash—
H
44
44
66
E, F
B
11
22
55
long dash—
I
22
77
1010
G, H
C
55
55
55
A
J
22
44
77
I
D
44
88
1313
A
K
66
1010
1313
I
E
11
1010
1717
B, C
L
22
66
66
J
F
11
55
77
D
M
22
22
33
K
G
22
66
99
D
N
77
77
1212
L, M
a) The expected completion time of the project = nothing days (round your response to two decimal places).
Time (days)
Immediate
Time (days)
Immediate
Activity
a
m
b
Predecessor(s)
Activity
a
m
b
Predecessor(s)
A
55
55
77
long dash—
H
44
44
66
E, F
B
11
22
55
long dash—
I
22
77
1010
G, H
C
55
55
55
A
J
22
44
77
I
D
44
88
1313
A
K
66
1010
1313
I
E
11
1010
1717
B, C
L
22
66
66
J
F
11
55
77
D
M
22
22
33
K
G
22
66
99
D
N
77
77
1212
L, M
Explanation / Answer
as mean time of activiity =(a+4m+b)/6
from above: expected completion time of the project =50.83 days
Activity Early Start Early Finish Late Start Late Finish Slack A 0.00 5.33 0.00 5.33 0.00 B 0.00 2.33 8.00 10.33 8.00 C 5.33 10.33 5.33 10.33 0.00 D 5.33 13.50 7.17 15.33 1.83 E 10.33 20.00 10.33 20.00 0.00 F 13.50 18.17 15.33 20.00 1.83 G 13.50 19.33 18.50 24.33 5.00 H 20.00 24.33 20.00 24.33 0.00 I 24.33 31.00 24.33 31.00 0.00 J 31.00 35.17 33.50 37.67 2.50 K 31.00 40.83 31.00 40.83 0.00 L 35.17 40.50 37.67 43.00 2.50 M 40.83 43.00 40.83 43.00 0.00 N 43.00 50.83 43.00 50.83 0.00 mean time= 50.83Related Questions
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