$3.$ Seether Co$.$ wants to issue new $20-$year bonds for an expansion project. The company currently has $10\%$ coupon bonds on the market that sell for $$980,$ make semiannual payments, and mature in $20$ years. What coupon rate should the company set on its new bonds if it wants them to sell at $$1,100?$ The par value of the bonds is $$1,000.$