a) Explain the difference between assignment and transportation problems.
b) State the assumptions made in solving a transportation problem.
c) Determine an initial basic feasible solution to the following transportation problem using the minima method:

The following data for the activities of a project are available:

Required:
i. Draw the network, number the nodes, find the project completion time and calculate total, free and independent floats for the activities
ii. When the activity duration of G is doubled, identify the critical path