6. The manufacturing engineer at Sunny manufacturing was working on a new remote controlled toy Monster Truck. The assembly line must be able to produce 600 Monster Truck per day to meet the forecasted demand. Production time per day is 480 minutes, and the assembly steps and times for the truck are given bellow; Task Immediate Follower Task Time (in second)
A - 28
B - 13
C B 35
D A 11
E C 20
F D, E 6
G F 23
H F 25
I G 37
J G, H 11
K I, J 27

Using the information given above, provide answers for each of the following.
a. Draw a precedence (network) diagram (3 points)
b. Compute the cycle time needed to produce the 600 Trucks (3 points)
c. Determine the minimum number of workstations required (4 points