Product A is assembled from the three subassemblies B, C, D, and component E. Subassembly B is assembled from the three assemblies F, G, and H. Subassembly C is assembled from components J and K and subassembly L. Subassembly D is assembled from component M and subassembly N.

• Subassembly F is assembled from P-Q-R
• Subassembly G is assembled from S-T
• Subassembly H is assembled from W-X
• Subassembly L is assembled from Y-Z
• Subassembly N is assembled from W-aa
• Subassembly T is assembled from Y-W-bb

Now consider the following:

• It takes four days to produce or assemble B, D, F, L, and W.
• It takes four days to produce or assemble A, E, G, H, K, and N.
• It takes four days to produce or assemble C, J, M, Q, S, and T.
• It takes four days to produce or assemble P, R, X, Y, Z, aa, and bb.

E) Assume all parts except A, B, H, L, Q, and N are held in inventory. How long will it take to produce the product? Explain your answer.

F) Assume no inventory of subassemblies or components is held. Construct a Gantt chart showing the last possible starting and finishing time for all work to ensure that completion of the final product is not delayed.