or A 15-year 8% bond with semiannual coupons and face amount $1,000 is callable on any coupon date in the 10th to 15th years. In the 10th year the bond is callable at par, in the 11th 12th years at redemption amount $1,150, or in the 13th 14th or 15th at redemption amount $1,350. Find the price that a investor is willing to pay, if he/she intends to ensure a minimum yield of: (a) 12% convertible semiannually. (b) 6% convertible semiannually