Suppose a bank currently has $150k in deposits and $15k in reserves. The required reserve ratio is 10% (so this bank holds no excess reserves). If there is a deposit outflow for $5k, what would be the bank's resulting reserve ratio?

What would it cost the bank in $s to comply if it decided to borrow fed funds from another bank at a fed funds rate of 0.25%?

What would be the cost in $s for this bank to comply with its required reserves if the bank decides to borrow from the Fed's discount window at 0.75%?