... and the time to maturity to time to call.To give a trial-and-error example, suppose a 20-year bond has a coupon of 8 percent, a price of 98, and is callable in 10 years. The call price is 105. ... percent. Bonds with couponrates of 0 percent, 5 percent, 10 percent, and 15 percent are presented. As the figure shows, theduration of a zero-coupon bond rises step-for-step with maturity. For the ... calculated because of the lack of coupons8. Duration Which one of the following bonds has the shortest duration? (1988 CFA exam)a. zero coupon, 10-year maturityb. zero coupon, 13-year maturityc....