If the wage rate is going to decrease from 17 to 13 dollars, the expanse in employment is going to rise by 4 workers.
When the wage was 16 dollars the number workers was given as 6
When the wage was 17 the workers were 4
A decrease from 17 to 13 means that there would be an expansion by the total of two workers.
That would be from 6 workers - 4 workers.
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