uses preferred stock in its capital structure.

a$.$ Calculate the return on invested capital $($ROIC$)$ for each firm. Round your answers to two decimal places.

b$.$ Calculate the return on equity $($ROE$)$ for each firm. Round your answers to two decimal places.

ROE for firm $LL$: $\%$

ROE for firm $HL$: $\%$

$15\%.$ Calculate the new ROE for LL$.$ Round your answer to two decimal places.