my instructor changed the number and i don't know how to calculate this Facility Layout Planning anymore. help me with these two

2. Twelve tasks, with times and precedence requirements as shown in the following table, are to be assigned to workstations using a cycle time of 2 minutes. Iwo heuristic rules will be tried (1) greatest positional weight, and (4) most following tasks. In each case the tiebreaker will be shortest processing time. A. Draw the precedence diagram for this line. B. Assign tasks to stations under each of the two rules. C. Compute the percentage of idle time for each rule. Task Immediate Predecessor Task Time 0.1 0.2 0.9 0.6 0.1 0.2 0.4 0.1 0.2 0.7 0.3 0.2 a b C d e f a b QUI C d,e f g h i j i k j I k g V6 h 1. A shop works a 400-minute day. The manager of the shop wants an output of 250 units per day for the assembly line that has the elemental tasks shown in the table. Do the following: A. Construct the precedence diagram. B. Assign tasks according to the most following tasks rule. Break ties with the greatest positional weight rule. C. Assign tasks according to the greatest positional weight rule. Break ties with the most following tasks rule. D. Compute the balance delay for each rule. Which one yields the better set of assignments in this instance? Task Immediate Predecessor Task Time 0.5 DC + OF__ E f a a a b,c d g e h g f j e,i k h,j m k 1.4 1.2 0.7 0.5 1.0 0.4 0.3 0.5 0.8 0.9 0.3