Please check my answers to the following questions attached. If I have something wrong, please explain

QUESTION 10 An airline serves two types of customers: business customers and vacation travelers. There are 150 seats on the airline's plane. Suppose there are 50 business customers willing to pay $1,000 for a flight and 100 vacation travelers willing to pay $500 for a flight The fixed cost of providing the flight is $20,000. In addition, there are variable costs of $100 per customer. Suppose the airline charges $1,000 for the flight. Calculate the airline's profits at this price. 25000 QUESTION 11 Following on from the previous question. Suppose the airline charged $500 per customer. What would the airline's profits be? 20000 QUESTION 12 Following from the previous question. Suppose that the airline found a way of identifying business customers and vacation travelers. It then decides to charge business customers $1,000 and vacation travelers $500 Calculate its profits at these prices 65000 QUESTION 13 In the previous question, what type of price discrimination is the airline using O Indirect price discrimination Third degree price discrimination Second degree price discrimination