Answer:
$10,000.
Step-by-step explanation:
To find the amount of required reserves for a commercial bank, you need to multiply the checkable-deposit liabilities by the required reserve ratio.
In this case, the checkable-deposit liabilities are $50,000, and the required reserve ratio is 20 percent, which can be expressed as 0.20.
Required reserves = Checkable-deposit liabilities * Required reserve ratio
Required reserves = $50,000 * 0.20
Required reserves = $10,000
Therefore, the amount of required reserves for the commercial bank is $10,000.