Question: A maintenance project was broken down into a set offifteen activities, after which
following table was prepared. Determine the critical path bypreparing a CPM network
using the following table and calculate earliest start time andlatest start time of each event
of CPM network.
| Activity | Immediate Predecessor |
Duration (hours) |
Activity | Immediate Predecessor |
Duration (hours) |
| A | – | 2 | H | D | 1 |
| B | A | 14 | I | D | 7 |
| C | A | 14 | J | D | 7 |
| D | B,C | 3 | K | J | 14 |
| E | D | 70 | L | K | 1 |
| F | D | 14 | M | E,G,L | 1 |
| G | F | 1 | N | H,L,M | 1 |
| O | I,N | 1 |
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