I need help with question 11, not sure how to do any of it

1. terest rate. FFF in Problem 6 now has to pay 12 per- cent for its capital. Calculate the impact on total an- nual holding costs for FFF. A technology problem has rendered some of the in- ventory at FFF (Problem 6) obsolete. FFF estimates that the risk cost of its inventory is now 10 percent. (a) Calculate the new annual holding cost rate. (b) Calculate the new total annual holding costs for FFF 9. Custom Computers, Inc. assembles custom home computer systems. The heat sinks needed are bought for $12 each and are ordered in quantities of 1300 units. Annual demand is 5200 heat sinks, the annual inventory holding cost rate is $3 per unit, and the cost to place an order is estimated to be $50. Calculate the following (a) Average inventory level (b) The number of orders placed per year (c) The total annual inventory holding cost (d) The total annual ordering cost (e) The total annual cost 10. Custom Computers, Inc. from Problem 9 is consid- ering a new ordering policy. The new order quantity would be 650 heat sinks. Recalculate Problem 9. parts (a) through (e), and compare results. 11. Bill Maze, recently hired by Custom Computers, Inc., has suggested using the economic order quantity for the heat sinks. Using the information in Problem 9. calculate the following (a) Economic order quantity (b) Average inventory level (C) The number of orders placed per year (d) The total annual ordering cost (e) The total annual holding cost (1) The total annual cost Compare these results with the costs calculated in Problems 9 and 10