Answer and Explanation:
a. The completion of the following table to reflect any changes in First Main Street Bank's T-account is shown below:-
<u>First Main Street Bank's Balance Sheet
</u>
<u>Assets           Amount          Liabilities                         Amount</u>
Reserves     $750,000      Checkable Deposits       $750,000
b. The completion of the following table to show the effect of a new deposit on excess and required reserves is shown below:-
<u>Amount deposited</u>      Change in excess  Change in required
                                             <u>reserves</u>                     <u>reserves</u>
$750,000                            $600,000                    $150,000
                                   ($750,000 - $150,000)     ($750,000 × 20%)