Each unit of A is composed of two units of B and three units of C. Items A, B and C have on-hand inventories of 40, 50 and 60 units respectively. Item B has a scheduled receipt of 30 units in period 1. Lot-for-lot (L4L) is used for Item A. Item B is required to be purchased in multiples of 100. Item C requires a minimum lot size of 50 units. Lead times are one period Item A and two periods for each of the Items B and C. The gross requirements for A are 40 in Period 5, 30 in Period 7, and 80 in Period 9. Find the planned order releases for all items to meet the requirements over the next 10 periods.

Construct a product structure tree.

a) Consider Item A. Find the planned order releases and on-hand units in period 10.

b) Consider Item B. Find the planned order releases and on-hand units in period 10.

c) Consider Item C. Find the planned order releases and on-hand units in period 10.