answer both questions please

Ziff Corp. has a very attractive credit policy, and none of its customers pays in cash when the firm makes a sale. Ziff Corp. sells to its customers on credit terms of 3/10, net 30. If a customer bought $200,000 worth of goods and paid the firm cash eight days after the sale, how much cash would Ziff corp. get from the customer? $200,00 $170,000 $175,000 $194,000 If the customer paid off the account after 15 days, Ziff Corp. would receive Approximately 40% of Ziff Corp.'s customers take advantage of the discount and pay on the 10th day. The remaining 60% take an average of 35 days to pay off their accounts. What is Ziff Corp.'s days sales outstanding (DSO), or the average collection period? 25.0 days 30.0 days 21.3 days 27.5 days