Economic-Federal REserve question-Help plz thank you?

Question

The Federal Reserve creates $1,000 (new money), gives it to Smith, who then deposits it in a bank. If the required reserve ratio is 10 percent, the maximum increase in the money supply is __________ and the banking system created __________ percent of the increase in the money supply.

$10,000; 10

$10,000; 100

$100,000; 10

$100,000; 90

$10,000; 90

Answer 1

$10,000; 90

$1'000 / 10% = $1'000 / 0.1 = $10'000

Created by central bank = $1'000 / $10'000 = 10%

Created by banking system = 100% - 10% = 90%