In: Economics
Time period = 12 years
Let initial amount = A
Final amount = 5A
Compunding frequency = Quarterly
Let annual rate of return = r
Setting up formula:
5A = A (1+ r/(4*100))12*4
5A = A (1+ r/400)48
5 = (1+ r/400)48
Solving, we get: r = 13.64%