Matthew Liotine's Dream Store sells water beds and assorted supplies. His best-selling bed has an annual demand of 390 units. Ordering cost is $41; holding cost is $5 per unit per year.

a) To minimize the total cost, how many units should be ordered each time an order is placed? EOQ = enter your response here units (round your response to the nearest whole number).

b) If the holding cost per unit was $6.00 instead of $5, what would the optimal order quantity be?

New EOQ = enter your response here units (round your response to the nearest whole number).