A perfect competitor charges a price of $15. The first worker he would hire would have a marginal physical product of 20, the second worker he would hire would have a marginal physical product of 18, the third worker would have a marginal physical product of 16, and the fourth worker would have a marginal physical product of 14. (a) How many workers would he hire if the wage rate were $180?____ worker(s) hired How much would his wage bill be? ____ wage bill (b) How many workers would he hire if the wage rate were $220? ____ worker(s) hired How much would his wage bill come to? $____ wage bill