A 10% bond with face amount 100 is callable on any coupon date from 15 years after issue up to the maturity which is 20 years from issue, assuming that the bond is callable at a redemption amount of 110, including the redemption at maturity.

Find the price of the bond to yield a minimum nominal annual rate of (i) 12%, (ii) 10%, and (iii) 8%.

Find the minimum annual yield to maturity if the bond is purchased for (i) 80, (ii) 100, and (iii) 120.