plz solution it

2. The following table provides the information necessary to construct a project network and project crash data: Activity Activity Activity Time (weeks] Cost ISI Activity Predecessor Normal Crash Normal Crash 20 1,000 1,480 I 24 20 1.200 1,400 MAUNU 14 700 1,190 10 500 820 11 550 730 a. Construct the project network. b. Determine the maximum possible crash time for the network, and crash the network the maximum amount possible. c. Compute the normal project cost and the cost of the crashed project