Answer:
a. Return on Equity refers to how much income the company earned per dollar of investment. One formula for the Return on Equity is;
Return on Equity = Return on Assets * [tex]\frac{Total Assets}{ 1 - ( Debt/Assets)}[/tex]
Assuming assets are $1 this can be calculated by;
= 13% * [tex]\frac{1}{1 - 0.25}[/tex]
= 17.33%
b. If there is no debt then the Return on Investment will be the same as the return on Equity. However, proving it with the formula gives;
Return on Equity = Return on Assets * [tex]\frac{Total Assets}{ 1 - ( Debt/Assets)}[/tex]
= 13% * [tex]\frac{1}{1 -0}[/tex]
= 13%