Answer:
annual rate of return = 54.55%
Explanation:
given data
gave to your cousin present value = $770
cousin give you future value = $1190
solution
we get here annual rate of return that is express as
annual rate of return = [tex]\frac{future\ value}{present\ value}[/tex] - 1 ...................1
put here value and we get
annual rate of return = [tex]\frac{1190}{770} - 1[/tex]
solve it we get
annual rate of return = 54.55%