Problem Statement: Critical Path Method

The junior assistant of project manager was assigned to prepare a PERT chart from the information given below. He has done with the assignment and asked you to review the same. After carefully checking, you have noticed that there are some mistakes in the chart.

Activity	Predecessor	Duration (days)
A	-	3
B	A	4
C	A	2
D	A	5
E	C,B	1
F	C,E	2
G	C,D,F	4
H	F,G	3
I	G	4
J	H,I	5
K	J	3

Required:

1. You are required to highlight the mistakes by either mentioning on the chart or by written it down.
2. Draw the corrected PERT chart.
3. Mention the activities which are on the CP.
4. Calculate the total duration of this project by performing forward and backward passes.

Es At EF LS Dus LF LEGEND 3 B7 4 12 7 F8 10 1 11 ZN END 23 K 25 START 10 A 3 1 2 3 4 3c 5 8 2 10 8 F10 13 215 114 H 17 15 38 J 13 18 5 23 233 25 110G/14 14 I 18 308 14 5110 110 4 14 144 18