Please answer all questions

PROBLEM A: Use the following to antwer questions 6 - 11 : A firm desires to control invertory lovels wo as to minimite the sum of holding and order oosts. It costs the firm $20 to place an order. The fim estimates its itventory carrying costs at S4funisyear. Weekly demand is 100 units and there are 50 weeks in the work year. The ism costs 510 per unit. Lead Time for the produet is 4 woeks. 6. What quantify of leems should the fim order oach time so as to minimiae total ituentory costs? a. 32 b. 45 c. 224 d. 316 e. 145 7. For the order quantity obthined in Q6, what will be the total annual holding cost. a. 50 b. 100 c. 632 d. 447 . . 224 8. For the order quansty obtained in Q4, what will be the annual ordering cost. a. 447 b. 50 c. 100 d. 316 0. 224 9. If 200 are crdered each time, then what will be the annual holding cost. a . 54 b. 400 c. 250 d. 500 e. 200 10. If 1000 are ordered each firme, then what will be the annual ordering cost. a. 2000 b. 50 c. 10s d. 250 e. 500 11. In order to not nan out of stock before the reseipt of a new onder, at what imventery level should the firm place an order? That is, what is the receder point equal to