Answer:
The duration of the bond = 7.56 years
Step-by-step explanation:
Given the current price = 100
DM = -1 x Current derivative price / Current price
DM = (-1 x -$700 / $100)
DM = 7
Now, D = DM (1 + r)
D = 7 (1 + 0.08)
D = 7.56
The duration of the bond = 7.56 years