The following table lists the components needed to assemble an end item, lead times, and quantities on hand.

I understand how to work on A but I am stuck on B.

This is my calculation for A:

Amount on Hand for B: 2*18-8=28

Amount on Hand for C:1*18-11=7

Amount on Hand for D:3*18-23=31

To find additional units of E: 2*28+2*7+2*31-9 = 123

Please help me calculate the second part!

The following table lists the components needed to assemble an end item, lead times, and quantities on hand. End Item LT (wk) Amount on hand ON 00 ONM UN+ INO 0 11 23 27 4 End Item B (2) D (3) E (2) F(3) G (2) E (2) H14) E (2) a. If 18 units of the end item are to be assembled, how many additional units of E are needed? (Hint: You don't need to develop an MRP plan to determine this.) Additional units b. An order for the end item is scheduled to be shipped at the start of week 13. What is the latest week that the order can be started and still be ready to ship on time? (Hint You don't need to develop an MRP plan for this part either.) The latest week