Victoria Vicuna has several investments.

1. One of these investments is a bank account that earns interest of J12 = 3.951%. She notices that

   the value of her bank account is exactly 1.5 times the amount that she originally invested. If her initial investment was the only investment in the account, how long ago did she start the account.

2. Another of her investments has also grown to 1.5 times the initial investment. She opened the account exactly 10 years ago. What interest rate did she get to achieve this account?

3. Victoria has some more money that she wants to invest. One investment offers a rate of return of J4 = 10.951% while another offers an effective two year rate of 24%. Which investment should she take?