Answer:
(B) If the explicit cost for the consulting job is $25,000 per year, your economic profit is equal to $45000.
Explanation:
Economic profit is obtained by substracting explicit (monetary) costs, and implicit (opportunity) costs, from total earnings.
In this case, the earnings for working as an economic consultant are $100,000. The implicit, opportunity cost is the $30,000 that are given up because of quitting the serving job. If the explicit cost of renting an office, purchasing supplies and buying a computer is $25,000, then, we have the following equation:
Economic profit = earnings - explicit costs - implicit costs
= $100,000 - $25,000 - $30,000
= $45,000