A freight delivery service is looking at the impact of allowing overtime in their packing-sorting department. For a week they measured the average number of packages sorted during a regular 8-hr shift. The next week they measured the average number of packages sorted during a regular shift with 2 hr of overtime. During the first week (just regular time), the average number of packages sorted was 1,250. During the second week (regular time with overtime), the average number of packages sorted was 1,500.

Required:
a. What was the productivity during the first week?
b. What was the productivity during the second week?