Final answer:
The total net worth of Bill's farm is $115,000, which is calculated by subtracting the total liabilities of $135,000 from the total assets of $250,000.
Step-by-step explanation:
The net worth of Bill's farm can be calculated by subtracting the total liabilities from the total assets, which is a common approach used in determining a business's financial health.
Total Assets: $250,000
Total Liabilities: $135,000
Net Worth (Total Assets - Total Liabilities) = $250,000 - $135,000 = $115,000.
Therefore, the correct answer to the student's question "What is the total net worth of Bill's farm?" is $115,000.