Answer:
$80 lost for not working
Explanation:
Opportunity cost refers to the sacrificed benefits as a result of preferring on a particular option over another. As people make choices, the forfeit one option in favor of another. Opportunity cost is the missed value of the next best alternative.
For John, he has a choice between working or going to the concert. He has two tickets worth $50. Working would mean her twice her regular income, which is $20 per hour. If he works for four hours, his total earning will be $80. If John chooses to go to the concert, he will miss the opportunity to earn $80. The opportunity cost will be the missed $80 that he would have received from working.
