Final answer:
The question involves setting up a T-account balance sheet for a bank with given assets and liabilities, and calculating the bank's net worth, which is found to be $220.
Step-by-step explanation:
The subject of this question is the calculation of a bank's cash ratio and the creation of a balance sheet with T-accounts. When assessing a bank's liquidity, the cash ratio is particularly important.
 
Assets:
 Cash (reserves): $50
 Government Bonds: $70
 Loans: $500
 Total Assets: $620
 
Liabilities:
 Deposits: $400
 Total Liabilities: $400
 
To find the bank's net worth, we subtract the total liabilities from the total assets:
 
Net Worth = Total Assets - Total Liabilities
 Net Worth = $620 - $400
 
The bank's net worth is therefore $220.