Neck-ed is a company producing designer neckties. In March, Neck-ed employed 20 workers with total output for the month of 100 neckties. In addition, if Neck-ed hired 5 additional workers, then its output would increase by 50 neckties.
For March, Neck-ed's average product of labor was ____ neckties per worker, and its marginal product of labor would be ____ additional neckties per additional worker.
6...50
6..10
5...50
5...10