Provide answers with tables and solution

Consider the bill of material for product P and the data given in the following table. The master schedule requirements for P are 70 units in week 6. Items Q and R are manufactured internally by the firm and use the lot-for-lot lot-sizing rule. Item S is purchased from a local distributor. and has a Fixed Order Quantity of 50 pieces per order. Questions: 1) How many R's should be ordered? 2) When should the order for R's be released? 3) What will the projected on hand inventory of item Q be in week 4 ? 4) What will the projected on hand inventory of item S be in week 8