In 1971, a Bank Worker Could Process 265 Checks in 1

Multiple Choice

In 1971, a bank worker could process 265 checks in 1 hour.Currently, computers with built-in reader-sorter processing capacity have pushed that number above 100,000 checks per hour.Economists describe this type of activity as

A) exploitation of labor.
B) an increase in labor productivity.
C) speed-up.
D) comparative advantage.
E) mutual gains from voluntary trade.