XYZ company has 22 A-level accounts, each requiring 50 calls per year, and 52 B-level accounts, each requiring 12 calls per year. and 104 C-level accounts, each requiring 3 calls per year. If each salesperson at company can make 509 sales visits per year, and 17 percent are devoted to nonselling activities such as to call upon new accounts. How many salespeople would be needed