ABSTRACT
The price at which a firm will be willing to supply a given quantity of goods normally includes a profit, since business is not carried on out of charity. Sometimes a particular piece of business is carried out at a loss, either through error or in the hope ot obtaining through it other and more lucrative orders. Some firms which carry on more than one line of business cut profits to a minimum on one or two lines and recoup themselves by a very high profit on others. This is often done in retail trade, especially by stores which sell many different kinds of goods.
