Problem 7-9 (Algo) Ergonomics Inc. sells ergonomically designed office chairs. The company has the following information Average demand = 27 units per day Average lead time = 54 days Item unit cost = $74 for orders of less than 440 units item unit cost = $71 for orders of 440 units or more Ordering cost = $49 Inventory carrying cost = 25% The business year is 250 days Assume there is no uncertainty at all about the demand or the lead time. a. Calculate EOQ If unit cost is $74 and $71. (Note These coas do not need to be feasible in their price range) (Round up your answers to the next whole number.) ECO units Unit cost at $74 Unit cost at $71 units b. Calculate annual ordering costs for each alternative? (For the first value, use your rounded EOQ from Parto. For the second value, use the lowest feasible order quantity needed to qualify for that price level. Round your answers to 2 decimal places.) Annual Ordering Cost Unit cost at 574 Unit cost at $71 C. Calculate annual inventory carrying costs for each alternative? (For the first volue, use your rounded EOQ from Parto. For the second volue, use the lowest feasible order quantity needed to quality for that price level. Round your answers to 2 decimal ploces.) c. Calculate annual inventory carrying costs for each alternative? (For the first value, use your rounded EOQ from Parta. For the second volue, use the lowest feasible order quantity needed to qualify for that price level. Round your answers to 2 decimal places.) Annual Inventory Carrying Cost Unit cost at $74 Unit cost at $71 d. Calculate annual product costs for each alternative? (Enter your answer os a whole number.) Annual Product Cost Unit cost at $74 Unit cost at $71 e. Using your rounded answers from Parts b, c and d, what will be the total cost for each alternative? (Round your answers to 2 decimal places.) Total Cost Unit cost at 574 Unit cost at $71 1. Based on your analysis, how many chairs should they order at a time? (Enter your answer as a whole number.) Order Quantity 9. How much can the firm save annually by using the order quantity in Part finstead of the first so shown in Part 8? (Round your answer to 2 decimal places.) Amounted