Fred and Barney Fill Egg Cartons with Eggs

Fred and Barney fill egg cartons with eggs. Fred just started the job and can fill only 25 cartons an hour. Barney has significant on-the-job experience that allows him to fill 50 cartons an hour. Both Fred and Barney work 50 hours a week. Fred's average weekly productivity is ______ cartons; Barney's average weekly productivity is ______ cartons; and as a team their average weekly productivity is ______ cartons.

A) 25; 50; 75
B) 25; 50; 37.5
C) 1,000; 2,000; 1,500
D) 1,250; 2,500; 1,875