please answer all parts of the question clearly and correctly for an upvote

16. The trinthine at PW is a small subassembly line that, aloag with other such lines, foeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW's new E cars. The trim line itsif involves only 13 work elements and must handle 20 cars per hour. Work-element data are as follows: a. Draw a precedence diagram. b. What cycle time (in minutes) results in the desired output rate? c. What is the theoretical minimum number of itationat