please answer 18&20. will upvote asap

Question 18 The soft goods department of a large department store sells 175 units per month of a certain large bath towel. The unit cost of a towel to the store is $2.50. The store uses an inventory carrying charge of 27% per year. If the ordering cost can be cut to $4.00, hat is the order frequency? O 15 017 O 8 3 pts 13 Question 20 A product has the following gross requirements. Week Requirements 50 80 90 50 30 60 O $19.965 $12,737 A Other data for this scenario include: setup cost $250, inventory holding cost $2 per unit per week. There is no beginning inventory; there are no scheduled receipts. The usage pattern is expected to continue for the remainder of the year. What will the total annual cost be if EOQ is used? $10,570 1 2 3 4 $11,469 5 6 $9.983 3 pt