Ricos Pizza sells an average of 900 small, 500 medium, and 300 large pizzas each

Ricos Pizza sells an average of 900 small, 500 medium, and 300 large pizzas each month. The selling price of a small pizza is $45, a medium pizza is $70, and a large pizza is $120. The cost of production for a small pizza is $28.50, for a medium pizza is $44.50 and for a large pizza is 75.5. Using operations involving vectors or matrices show that the average monthly profit is the same when calculated either as a total concept or as a per-unit concept. solution