Question

Hello,

I need to see the solution, how they got these numbers? Will appreciate help.

The Action Toy Company has decided to manufacture a new train set, the production of which is broken into six steps. The demand for the train is 4,600 units per 40-hour workweek: Predecessors Task A B С D E F Performance Time (seconds) 22 27 14 15 10 28 А A А B, C DE This exercise only contains parts b, c, d, e, and f. b) Given the demand, the cycle time for the production of the new train set = 31.3 seconds (round your response to one decimal place). c) The theoretical minimum number of workstations = 4 (round your response up to the next whole number). d) Using the longest operation time rule, the assignment of tasks to workstations should be: (Hint: Number workstations sequentially in terms of precedence relationships and combine any Task А B Workstation # Station 1 Station 2 Station 3 C D Station 3 E Station 4 F Station 5 Were you able to assign all the tasks to the theoretical minimum number of workstations? No e) The total idle time per cycle for the process = 29 seconds (enter your response as a whole number). f) The efficiency of the assembly line with 5 workstations = 80.0 % (enter your response as a percentage rounded to one decimal place). If one used 6 workstations instead of 5, the efficiency of the assembly line would be = 69.0 % (enter your response as a percentage rounded to one decimal place). Question is complete. Tap on the red indicators to see incorrect answers.

Answer 1

Please refer to the solution below.

The task precedence diagramis shown as below: 27 22 28 Is lo b) Demand = 4600 units/workweek workweek = 40 hours Theoretical cycle time for production of new trainset = 40 X 60X60 sec 4600 sees = 31-304 seconds the c) Total time required to complete the tasks - 22+27+14+15+10+28 sec = '16 sec Theoretical minimum no of workstations - Total time - 116 = 3.705 24 31-304 Hence, & workstations would be required Cycle time DS GROUP S

SATURDAY WEEK 35 27 August 2016 f) Efficiency of assembly line with 5 workstations I- Idletime =1-29 Total time L16 75 28 SUNDAY DS GROUP