QUESTION $6$

Bonds issued by Glorious Vending Corporation have a coupon rate of $11\mathrm{.}95$ percent and a face value of $$1,000\mathrm{.}00,$ pay semi$-$annual coupons with one just paid and the next coupon due in $6$ months, and mature in $9$ years from today. Six months ago, the bonds were priced at $$820\mathrm{.}07.$ Today, the bond's yield$-$to$-$maturity $($rTM$)$ is $15\mathrm{.}09$ percent. What was the rate of return for the bonds over the past $6$ months $($from $6$ months ago until today$)?$

$1799\%($plus or minus $2bps)$

$10\mathrm{.}70\%($plus or minus $2bps)$

$18\mathrm{.}30\%($plus or minus $2bps)$

$29\mathrm{.}23\%($plus or minus $2bps)$

none of the answers are within $2$ bps of the correct answe