A mаnufаcturer prоduces а set оf headphоnes at a unit cost of $25 and sells it to a retailer at $50 per unit. The retailer then sells the headphones to customers at $80 per unit. Using the information provided in the table, calculate the retailer's margin percentage. Unit Cost Unit Price Manufacturer $25 $50 Retailer $?? $80 Customer $80