Pls show work and explain how to do this

4.9. MPS parent X has planned order releases of 30 in weeks 2 and 4. Given the follow- ing product tree, complete the MRP records for parts Y and Z. Quantities required are shown in brackets. X Y(1) S 2/2) T Week Party Lead Time: 2 weeks Lot Size: 50 2 3 4 Gross Requirements Scheduled Receipts Projected Available 30 Net Requirements Planned Order Receipt Planned Order Release Week Part 2 Lead Time: 1 week Lot Size: 100 2 3 4 Gross Requirements Scheduled Receipts Projected Available 20 Net Requirements Planned Order Receipt Planned Order Release