It is week 1 and there are currently 10 As in stock. We need 300 As at the start of week 5. If there are scheduled receipts planned for week 3 and week 4 of 120 As each and A has a lead time of 1 week, when and how large of an order should be placed to meet the requirement of 300 As?

Four A washers, five B washers, two C bolts, and two D bolts are required to make one grill parts kit. If 100 grill parts kits are needed, how many more washers will be consumed than bolts?

Consider the following product structure. Fifty units of Product A are needed. How many units of F are needed?