am i correct? if not which one is wrong

The soft goods department of a large department store sells 135 units per month of a certain large bath towel. The unit cost of a towel to the store is $2.50 and the cost of placing an order has been estimated to be $11.75. The store uses an inventory carrying charge of 13% per year. The store operates 280 days per year. Determine the following: a. What is the optimal order quantity? 342.25 b. What are the number of orders? 4.73 c. What is the cost of managing the inventory (setup plus holding costs) $111.23 d. If the department store is open 280 days per year, how many days are between orders? 59.2 e. If the lead time from the supplier takes 10 days, what is the re-order point? 30.56 b. What are the number of orders? 4.73 c. What is the cost of managing the inventory (setup plus holding costs) $111.23 d. If the department store is open 280 days per year, how many days are between orders? 59.2 e. If the lead time from the supplier takes 10 days, what is the re-order point? 30.56 f. What is the total cost, including the cost of the inventory? $4,589.90