An electrical appliance A consists of three major components: B, C and D. One unit of A consists of two units of B, one unit of C, and three units of D. Subassembly B consists of two units of D, one unit of E, and one unit of F. Subassembly C consists of two units of E. Subassembly D consists of one unit of E and one unit of F.
1. Draw a product structure tree for A.
2. If the requirement of A is 100 units, then what will be the corresponding requirements for B, C, D, E and F?
3. If the inventory on hand is given as follows, what will be the net requirements of all components and subassemblies?