Answer:
interest rate = 24.6%
Explanation:
given data
initial investment = $6,000
grow = $18,000
time = 5 years
solution
we get here interest rate by future value that is express as
future value = principal × [tex](1+r)^{t}[/tex] ......................1
put here value and we get
$18,000 = $6,000 × [tex](1+r)^{5}[/tex]
$3 = [tex](1+r)^{5}[/tex]
solve it we get
r = 0.246
interest rate = 24.6%