You are required to (i) present a statement (or control report) for the life business manager showing the variances which have arisen, (ii) comment on the likely cause or causes for each variance identifying, so far as you can from the information given, how much of each variance arises from price differences and how much can be related to efficiency or inefficiency. 19. A project cons'sts of nine activities whose time estimates (in weeks) and other characteristics are given below: Activity Preceeding Time Estimates (weeks) Activity Optimistic Most likely Pessimistic A - 2 4 6 B - 6 6 5 C - 6 12 24 D A 2 5 8 E A 11 23 F B, D 8 12 G B, D 3 9 H C, F 9 27 l E 4 16 (i) Show the pert network of the project (ii) Identify the critical activities (iii) What is the expected project completion time and its variance (iv) What is the probability of completing the project one week before the expected time? 20. HAL is an aircraft manufacturer that has introduced a new airplane model. It expects the plane to cost Rs. 150,000,000 to manufacture (not including development cost) but their products have historically exhibited an 85% experience curve. Assuming the same experience rate will apply to this product. 1. Compute the cost of computing the each of the first five planes 2. the average cost per plane to produce the first 25 planes. 21. Distinguish between Marginal and Absorption Costing and highlight the various limitations attributed to the former. 22. The following table gives the activities in a construction project and other relevant information. Activity Immediate Predecessor Time (Days) Direct Cost (Fts. ) Normal Crash Normal