Answer:
$45,000
Step-by-step explanation:
Calculation to determine by how much should the bond discount be reduced for the six months ended December 31, 202
First step
Semiannual interest paid on 31.12.2021 = $9,000,000*8%*6/12
Semiannual interest paid on 31.12.2021= $360,000
Second step
Effective interest expense on 31.12.2021 = $8,100,000 * 10% * 6/12
Effective interest expense on 31.12.2021= $405,000
Last step
Bond discount to be reduced for 6 months ended 31.12.2021 = $405,000 - $360,000
Bond discount to be reduced for 6 months ended 31.12.2021=$45,000
Therefore by how much should the bond discount be reduced for the six months ended December 31, 202 will be $45,000