Answer: $450
Step-by-step explanation:
Total tickets purchased = 2
The cost of one ticket three months ago = $100
Current price of one ticket = $225
Total cost of two tickets = $225 × 2
= $450
The opportunity cost is the benefit that is foregone by selecting some other alternative. So, here two options are available that either attend the concert or resell the ticket at $450. Therefore, the opportunity cost of attending the concert is $450.