Jacques has plans to go to a play and already has a $50 nonrefundable, nonexchangeable, and nontransferable ticket. now kyoko, whom jacques has wanted to date for a long time, asks him to a party. jacques would prefer to go to the party with kyoko and forgo the play, but he doesn't want to waste the $$50 he spent on the play ticket.
from the perspective of an economist, if jacques decides to go to the party with kyoko, what has he just done?

evaluate under opportunity cost

Explanation:

This is an exmaple of opportunity cost:

The opportunity cost is the cost of the best alternative rejected:

Jacques  opportunity cost of the date is lossing the play and the $50 dollars of the ticket

as the date and party opportunity cost is not datingthe girl

As Jacques picks the date , it will be evaluating dating as more rewarding than the play as it prefer to renounce to the play rather than the date

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