Mathematical Problem Mark 10 Johnson Cogs wants to set up a line to serve 40 customers per hour, The work elements and their precedence relationships are shown in the following table. Work Time (min) Immediate Element Predecessor(s) A 0.20 B 1.00 C 0.60 AB D 0.40 E 0.60 C.D. 0.90 DE H G 0.23 E H 0.80 0.30 G.H 1.00 I K 0.20 J 4, Draw the precedence diagram, (5) b, Calculate the cycle time and the theoretical minimum for the number of stations (2) c, "Calculate the efficiency, Idle time & Balance delay. (3)