Answer:
$144,000
Explanation:
Given that
Salary = 40,000
Tuition = 30,000 per annum
Books = 2000 per annum
Recall that
Opportunity cost refers to the loss of other alternatives when one of those listed alternative is chosen. It refers to the benefits or cost an individual misses out on when choosing one alternative over the other. In this case, Zack chose school over work.
Thus opportunity cost for those 2 years
= (40,000 × 2) + (30,000 × 2) + (2000 × 2)
= 80000 + 60000 + 4000
= $144000
NOTE that, food is not added, because regardless of what alternative he picks, it is added as food is necessary for life.