What is the answer?

Value Total reserves: $20 billion Transactions deposits: $400 billion Cash held by public: $300 billion Required reserve ratio: 0.05 a. How large is the money supply (M1)? billion b. Are the banks fully utilizing their lending capacity? Banks currently have billion in excess reserves. Now assume that the public deposited another $10 billion in cash in transactions accounts. c. What would happen to the money supply initially (before any lending takes place)? Assuming the $10 billion in cash is not new money in the system, M1 will d. How much would the total lending capacity of the banking system be after this portfolio switch? billion e. How large would the money supply be if the banks fully utilized their lending capacity? billion