Answer:
$18,497
Step-by-step explanation:
As per Accounting Equation; 
Total Assets = Total Liabilities + Stockholders' Equity 
Total Assets = $223,500 
Suppose, If; 
Total Liabilities = x, & 
Stockholders' Equity = y, then above equation can be written as follows; 
$223,500 = x + y -------Equation 1 
 
Debt to Equity Ratio formula is as follows; 
D/E = Total Liabilities / Stockholders' Equity 
where, D/E = 0.45 
Based on the assumptions the above equation can be written as follows; 
0.45 = x / y 
Multiply whole equation by 'y' we get; 
x = 0.45y 
 
Put the value of x in Equation 1 we get; 
0.45y + y = $223,500 
1.45y = $223,500 
Divide the above equation by 1.45 we get; 
y = $223,500/1.45 
y = $154,137.93 
which means Stockholders' Equity = $154,138 
 
Now let's substitute the value of Stockholders' Equity in the Return on Equity Ratio formula to find the net income as follows; 
 
ROE = Net Income / Stockholders' Equity 
where, ROE = 12% 
12% = Net Income / $154,138 
Multiply the above equation by $154,138, we get; 
Net Income = $154,138 x 12% 
Net Income = $18,496.55 
Hence Net Income of the Blue Bird LTD for the period would be $18,497.