Calculate the yield to maturity on the following bonds:

a$.$ A $8\mathrm{.}4$ percent coupon $($paid semiannually$)$ bond, with a $$1,000$ face value and $24$ years remaining to maturity. The bond is selling at

$$905.$

b$.$ An $5\mathrm{.}5$ percent coupon $($paid quarterly$)$ bond, with a $$1,000$ face value and $10$ years remaining to maturity. The bond is selling at

$$913.$

c$.$ An $7\mathrm{.}5$ percent coupon $($paid annually$)$ bond, with a $$1,000$ face value and $8$ years remaining to maturity. The bond is selling at

$$1,063.$

$($For all requirements, do not round intermediate calculations. Round your percentage answers to $3$ decimal places. $($e$.$g$.,32\mathrm{.}161))$

Answer is complete but not entirely correct.