A firm wishes to determine the number of sales representatives needed for outside sales. The company has 1,000 customers that are expected to be visited 4 times per year by a company rep with each visit requiring about 2 hours of time for preparation, travel, and face-to-face selling time. The number of hours available per sales representative per year is 1600 allowing for report-making, training of other salespeople, and other down time. How many sales representatives does the firm need?