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WASSCE
Table 1 below shows the number of workers engaged by an agricultural firm over a period of time. Study it and answer the questions that follows
Table 1
| Numbers of workers | Total product | Marginal product | Average product |
| 0 | 0 | 0 | 0 |
| 1 | 20 | 20 | 20 |
| 2 | 50 | 30 | Z |
| 3 | 70 | 20 | 23.3 |
| 4 | 80 | Y | 20 |
| 5 | 80 | 0 | 16 |
| 6 | X | -9.8 | 11.7 |
- calculate the values of X,Y and Z
Leave your answer in 'X=ab.c, Y=ab, Z=ab'
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