Three friends$-$Neelam, Ashok, and Madhu $$ have asked you to determine the equivalent taxable yield on a municipal bond. The bond's current yield is $5\mathrm{.}28$ percent with $5$ years left until maturity. Neelam is in the $15$ percent marginal tax bracket, Ashok is in the $25$ percent bracket, and Madhu is in the $35$ percent bracket. Calculate the equivalent taxable yield for your three friends. Assuming a similar AAA corporate bond yields $6\mathrm{.}00$ percent, which of your friends should purchase the municipal bond?

The equivalent taxable yield for Neelam who has a $15$ percent marginal tax bracket is

$\%.($Round to two decimal places.$)$