Question 1 - What is the difference between gross and net material requirements in MRP?

Question 2 - The final product A is produced from items B, C and D. Item B is assembled from C. Subset D is produced from B. To make 1 unit of A, everyone uses 2 units of its components. Just assembling a B unit requires only 1 C.

a) Draw a structure of item "A"

b) What is the gross need for "C" to produce 20 units of "A", considering that there are zero units in stock?

answer: 80 units of C

c) If there are 50 units of "D", 30 units of "B" and zero units of "C" in stock, what is the net need for "C" to produce 50 units of "A"?

answer: 70 units of C

Question 3 - - The figure below shows the structure of the "Pen A" product.What is the minimum TOTAL lead time, in weeks, to fulfill an order for the "Pen A" product, assuming there is no stock? (LT given in weeks).

Caneta A LT = 2 Carga B LT = 3 Corpo E LT = 2 Ponta C Tubo D Plastico F LT = 8 LT = 4 LT = 5