Exercise N$1$

A table is assembled using three components, as shown in the accompanying product structure tree. The company that makes the table wants to ship $100$ units at the beginning of day $4,150$ units at the beginning of day $5,$ and $200$ units at the beginning of day $7.$ Receipts of $100$ wood sections are scheduled at the beginning of day $2.$ There are $120$ legs on hand. An additional $10$ percent of the order size on legs is added for safety stock. There are $60$ braces on hand with no safety stock requirement for