1.2 Samantha bought a £200 ticket for a music festival in London. Because it stars several of her favorite rock groups, she would have been willing to pay up to £300 to attend the festival. However, her friend Joanne invites her to go with her to a trip to Oxford on the same day. The trip would cost £80, but she would be willing to pay up to £150. What is Samantha’s opportunity cost of going to the festival? (Hint:

See Q&A 6.1.)