Final answer:
The net worth of the bank is $20.
Step-by-step explanation:
To calculate the net worth of the bank, we need to set up a T-account balance sheet for the bank, with assets and liabilities. The assets include deposits ($400), reserves ($50), and government bonds ($70). The liabilities include loans ($500). The net worth is calculated by subtracting the total liabilities from the total assets.
Assets: Deposits ($400) + Reserves ($50) + Government Bonds ($70) = $520
Liabilities: Loans ($500)
Net Worth = Assets - Liabilities = $520 - $500 = $20