31. Data on a project based on network calculation methods using planned duration is shown below. Other data includes the budgeted cost, actual duration, and actual cost for completed activities. Note that updated start and finish calculation is required for a portion of the question. Activity Predecessor CPM Calculated Planned CPM Planned Activity Actual Actual Planned Start Duration Finish Budget Cost Duration Cost A 0 3 3 3,000 5 3,400 B A 3 4 7 8,400 5 9,600 B 7 5 12 4,500 4 4,800 D 12 6 18 6,600 E D 18 5 23 3,500 F E 23 4 27 3,600 G F 27 4 31 10,000 H G 31 2 33 1.800 a. What is the planned cumulative budgeted cost at the end of day 15? (2 p) b. Based on the actual finish times what is the actual cost at the end of day 15 including estimates of costs based on planned cost for activities in progress on that day assuming the project is executed on a soon as possible schedule? (3 p)