ABC Company has a before$-$tax cost of debt of $4\mathrm{.}66\%.$ The cost of equity of an unlevered firm $($Note: cost of equity of unlevered firm return on assets cost of capital of the firm's assets $=$R A $)$ is $8\mathrm{.}79\%.$ The D $/$ E ratio is $1\mathrm{.}07.$ What is ABC's cost of equity $?$ Assume no taxes. Enter your answer as a percentage rounded off to two decimal points. Do not enter $\%$ in the answer box.