Tlie following table shows the components needed to assemble an end item, their manufacturing or purchase lead times for typical lot sizes, and amount on hand. The following product structure tree for the End Item shows the number of each component per parent.

a. 1 f 20 units of the end item are to be assembled, how many additional units of E are needed? (You don't need to develop the MRP tables to determine this.)
b. An order for the end item is scheduled to be shipped at the start of week 11. What is the latest week that production or purchase of the components of the order can be started and the order still be ready to ship on time? (You don't need to develop the MRP tables for this part either.)

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End em CD FGH 2 10 10 25 1230 5 O Item tem B LT (wk) Amount on hand 2 End lem D(3) B(2) E(2 R3) G(2) E(2 H(4) E(2)