A Good Salesperson Can Sell $1,000,000 Worth of Goods,while a Poor

Essay

A good salesperson can sell $1,000,000 worth of goods,while a poor one can sell only $100,000 worth of goods.Job applicants know if they are good or bad,but the firm does not.A firm will offer job applicants a choice between a fixed salary or 20% commission.Assuming risk-neutral salespersons and no opportunistic behavior,what level must the fixed salary be so that the firm can distinguish a prospective good salesperson from a poor one,and thereby avoid hiring a poor one?