Final answer:
The accounting profit of a debt-financed tanker is -$15,000 per day. The economic profit is also -$15,000 per day. For a debt-financed laid-up tanker, both the accounting and economic profit are -$17,000 per day.
Step-by-step explanation:
To calculate the accounting profit of a debt-financed tanker per day, we subtract the variable costs (operating costs) and interest costs from the revenues. In this case, the accounting profit would be $10,000 - ($8,000 + $17,000) = -$15,000. The economic profit takes into account both explicit and implicit costs. Since the interest cost is an explicit cost, the economic profit would be the same as the accounting profit, which is -$15,000 per day.
For a debt-financed laid-up tanker, the accounting profit per day would be -$17,000 (interest cost), since there are no revenues. The economic profit would also be -$17,000, as there are no implicit costs in this scenario.