Following five problems

Current Wd $30\%$ Tax rate $30\%$

Structure Ws $70\%$

WACC $12\%$

Other Rf $5\%$ Tax rate $30\%$

Factors Market Risk Premium $8\%$

What is the current beta?

Group of answer choices

$1\mathrm{.}000$

$0\mathrm{.}813$

$0\mathrm{.}700$

$1\mathrm{.}600$

Show how to solve using excel.