Answer:
$300,000
Explanation:
Money Multiplier = 1 / Required Reserve Ratio
Money Multiplier = 1 / 0.20
Money Multiplier = 5
Reserve requirement will be 20% of $300,000 (Checkable Deposits)
Reserve requirement = $60,000
Excess Reserves = Reserve - Required Reserve
Excess Reserves = $120,000 - $60,000
Excess Reserves = $60,000
Expansion in loans and deposits will be: Excess reserves * money multiplier
= $60,000 * 5
= $300,000
So, if the original bank balance sheet was for the whole commercial banking system rather than a single bank, loans and deposits could have been expanded by a maximum of $300,000.