A firm has a debt$-$total asset ratio of $48$ percent and a return on total assets of $22$ percent. What is the return on equity?

$36\mathrm{.}27$ percent

$32\mathrm{.}95$ percent

$42\mathrm{.}31$ percent

$32\mathrm{.}41$ percent

$42\mathrm{.}50$ percent