Question

The wholesale price of a case of oranges is $13.50. If a retailer has an 80% markup, what will the retail price of a case of oranges be?$___________

Answer 1

The answer depends. 
If you are talking about Revenue it would be $24.30
But if you are talking about Profit it would be $10.80

Answer 2

The price would be $10.80 because you multiply the original price by the percent (80%=.80)
13.50(.80)=retail price