A company needs to rebalance a product layout for producing new plastic license plates. They plan to use the assembly line six hours in order to meet projected demand of 2,160 license plates each day. The following table describes the tasks involved in the production of this product:

Without regard to projected demand, what is the maximum possible cycle time for this assembly line?

Task	Time (secs)	Immediate Predecessor
a	3	none
b	4	none
c	5	a,b
d	7	none
e	9	c,d