Answer: $359
Step-by-step explanation:
Opportunity cost refers to the next best benefit that would have been accrued to you if you did not make the decision or embark on a project that you did. In this case therefore that would be the amount you would have earned working which is $180.
It can be measured as an Economic cost which is both the implicit cost and the explicit cost (opportunity cost).
= 84 + 95 + 180
= $359