Question: Mathematical Problem Mark 10 Johnson Cogs wants to set up a line to serve 60 customers per hour. The work elements and their precedence relationships

Mathematical Problem Mark 10 Johnson Cogs wants to set up a line to serve 60 customers per hour. The work elements and their precedence relationships are shown in the following table.

Work Element

Time (min) Immediate Predecessor(s) A 0.7 None B 0.5 A C 0.9 A D 0.6 B E 0.1 B F 0.4 C G 0.2 C H 0.3 D,E I 0.2 F,G J 0.5 H,I

a. Draw the precedence diagram. b. Calculate the cycle time and the theoretical minimumc.

c. Calculate the efficiency, idle time & Balance delay. d. Balance the line using the heuristic decision rules.

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