three managers of the magic potion company are discussing a possible increase in production. each suggests a way to make this decision. harry: we should examine whether our company’s productivity – gallons of potion per worker – would rise or fall. ron: we should examine whether our average cost – cost per worker – would rise or fall. hermione: we should examine whether the extra revenue from selling the additional potion would be greater or smaller than the extra costs. who do you think is right? why?
