Curtis invests $$425,000$ in a city of Athens bond that pays $6\mathrm{.}25\%$ interest. Alternatively, Curtis could have invested

the $$425,000$ in a bond recently issued by initech, incorporated that pays $6\mathrm{.}25$ percent interest with similar risk as the city of Athens bond. Assume that Curtis's marginal tax rate is $24\%.$

What is Curtis's after$-$tax rate of return on the city of Athens bond?