Two $10-$year bonds have the same par value of $$1,000$ and the same redemption value C$.$ They were purchased at the same annual effective yield rate j$.$ The first bond has a $6\%$ semiannual coupon rate and is purchased at a discount of $$73\mathrm{.}54.$ The second bond has an $8\%$ semiannual coupon rate and is purchased at a premium of $$71\mathrm{.}06.$ Compute j