1.2.2 Tables 1, 2, and 3 that follow present some data on three hypothetical economies. Complete the tables by figuring the measured productivity of labor and the rate of output growth. What do the data tell you about the causes of economic growth? (Hint: How fast are L and K growing?)

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TABLE 1 PERIOD L K Y Y/L 1 1,120 3,205 4,650 2 1,135 3,500 4,795 3 1,152 3,798 4,945 4 1,170 4,045 5,100 TABLE 2 GROWTH RATE OF OUTPUT GROWTH RATE OF PERIOD L K Y Y/L OUTPUT 1 1,120 3,205 4,650 2 1,175 3,246 4,775 3 1,255 3,288 4,904 4 1,344 3,315 5,036 TABLE 3 PERIOD L K Y Y/L 1 1,120 3,205 4,650 234 1,135 3,246 4,840 1,152 3,288 5,038 1,170 3,315 5,244 GROWTH RATE OF OUTPUT