A five-year bond with a yield of 11% (continuously compounded) pays an 8% coupon at the end

Question:

A five-year bond with a yield of 11% (continuously compounded) pays an 8% at the end of each year.
a) What is the bond’s price?
b) What is the bond’s duration?
c) Use the duration to calculate the effect on the bond’s price of a 0.2% decrease in its yield.
d) Recalculate the bond’s price on the basis of a 10.8% per annum yield and verify that the result is in agreement with your answer to (c).
Coupon
A coupon or coupon payment is the annual interest rate paid on a bond, expressed as a percentage of the face value and paid from issue date until maturity. Coupons are usually referred to in terms of the coupon rate (the sum of coupons paid in a...