a question about government security?

Question

if the Bank of Canada buys $1,000,000 of government securities from banks. If the desired reserve ratio is 10 percent, the banks' excess reserves will increase or decrease and by how much?

Answer 1

Bank of Canada decreases by -1,000,000
Government + 1,000,000

Need Bank of Canada's Holding to determine if they still have 10% reserve requirement.