Net Worth is calculated by finding the difference between total assets and total liabilities. In this problem, we are given revolving credit and unpaid bills but that is not necessary to find the total liabilities if we are given both net worth and total assets. Fill in the information we have using the formula below.
Net Worth = Total Assets - Total Liabilities
$20,000 = $150,000 - ? Liabilities
To solve, we can see that $150,000 - $20,000 = $130,000.
So Bryan and Mandy have a combined $130,000 in liabilities.