A life insurance salesman spends 9 hours a week on the telephone soliciting new clients. Fro past experience, the salesman estimates that each hour spent calling students, blue- collar workers, and professionals will produce the following number of additional sales: Hours calling (1 to 6), studnets( 10, 8, 6, 4, 1, 0), Blue-collar Workers (8,6,4,1,0), professionals (14, 11, 8, 6, 4, 1). Q-1. Hours spent calling students= ? Q-2. Hours spent calling blue-Collar workers=? Q-3. Hours spent calling professionals=?