Answer:
$2,500,000
Explanation:
Following the stated assumptions in the question, the money multiplier will be used to calculate the resulting effect of the $500,000 injection into the money supply.
The money multiplier formula is 1/r , where r is the required reserve ratio. So, the resulting change in demand deposits is:
Change in Demand Deposits = Change in Fresh Reserves (that is, the Initial Deposit)×1/r
= $500,000×1/0.20
=$500,000 × 5
= $2,500,000