Assuming a $1-$year $,$ money market account investment at $2\mathrm{.}91$ percent $($APY$),$ A $1\mathrm{.}53$ inflation rate, a $15$ percent inflation rate, a $15$ percent marginal tax bracket, and a constant $$70,000$ balance, calculate the after$-$tax rate of return, the real rate of return, and the total moneteray. What are the impications of this result for cash management decisions? Assuming a $1-$year, money market account investment at $2\mathrm{.}91$ percent $($APY$)$ a $15$ percent marginal tax bracket, and a constant $$70,000$ balance, The after$-$tax rate of return is $\_\_\_\_\_\_\_\_\%.($ Round to two decimal places.$)$