Problem 2 XYZ Project has 20 activities, each activity uses 4 different resources with their limits given in the following table. It is required to schedule the project so that the daily resource requirements do not exceed the resource limits. Activity Duration Predecessors Daily Resource Requirements RI R2 5 R4 A,B D M A,B GH CE E, G, H IK NANNA J, M, N 0 DO 5 P, R2 Daily Resource Limits 8 1215 Problem 3 Consider the project presented in Problem 2: a) Implement resource levelling and smoothing for each individual resource over the project life. b) Implement resource levelling and smoothing for both R1 and R2 at the same time with higher priority for RI (R1 per unit cost is triple that of R2)