(This question will not be graded)

Goldplay have announced a world tour and Theresa bought a ticket fast enough before they all got sold out. However, Theresa won't be able to attend the concert because she will go abroad to visit her cousin and so she's trying to sell the ticket in an auction website. Theresa just wants to get the highest revenue possible from the sale of the ticket.

She knows there are two types of people who often visit that website: fans of pop music, corresponding to 30% of the website's visitors, and fans of techno music, corresponding to the remaining 70%. Pop music fans would be willing to pay 100€ to get a ticket for the concert, but techno music fans don't enjoy Goldplay that much and so would only be willing to pay 40€ for a ticket. Both types of visitors have a reservation utility of 10 and are risk neutral. 

Select the correct option(s):