You have been given a ticket to see a Beyonce concert tonight. You cannot resell the ticket. Lady Gaga is performing on the same night & her concert is the only other activity you are considering. A Lady Gaga ticket costs $95 & on any given day you would be willing to pay as much as $180 to see her play. There is no other cost of seeing either performer. What is the opportunity cost of attending the Beyonce concert? Note: there is no option to see Beyonce tonight and Lady Gaga tomorrow