can you please show how did you answer yield to call?

In an earlier worksheet we discussed the difference between yield to maturity and yield to call. There is another yield that is commonly quoted, the yield to worst The yield to worst is the lowest potential yield that can be received on a bond without the issuer actually defaulting. Yield to worst is calculated on all possible call dates. It is assumed that prepayment occurs if the bond has a call provision. The yield to worst will be the lowest of yield to maturity or yield to call. The yield to worst may be the same as yield to maturity but never higher. Of course, with a traditional callable bond that has a call premium, the call premium can decline over time A company has the following bond outstanding. The bond is callable every year on May 1st, the anniversary date of the bond. The bond has a deferred call with three years left. The call premium on the first call date is one year's interest. The call premium will decline by 10 percent of the original call premium for 10 years. Eleven years from today, the call premium will be zero. Given the following information, what is the yield to worst for this bond? Current date: 5/1/2016 Maturity date: 5/1/2036 Price (percent of par): 104.5 Coupon rate: 10.00% Par value (percent of par): 100 Coupons per year: Call date Call premium 5/1/2019 S 100.00 5/1/2020 S 90.00 5/1/2021 S 80.00 5/1/2022 S 70.00 5/1/2023 5 60.00 5/1/2024 $ 50.00 5/1/2025 $ 40.00 5/1/20265 30.00 5/1/2027 S 20.00 5/1/202R 10.00 4 The yield to maturity and yield to call for each call date are: Current date: Maturity date: Price (percent of par): Coupon rate: Par value (percent of par): Coupons per year: 5/1/2016 5/1/2036 104.5 10.00% 100 Yield to maturity: 9.49% Yield to call Call date Call premium 5/1/2019 $ 100.00 5/1/2020 $ 90.00 5/1/2021 $ 80.00 5/1/2022 $ 70.00 5/1/2023 $ 60.00 5/1/2024 $ 50.00 5/1/2025 $ 40.00 5/1/2026 $ 30.00 5/1/2027 $ 20.00 5/1/2028 $ 10.00 Yield to worst: 0.00%