Mike has his money in a savings account earning 3.5 percent interest. How long will it take for his money to double?
twelve and a half years
two and a half years
just over twenty and a half years
twenty-four years

Respuesta :

By using 72 rule
Time=72/rate
T=72÷3.5
T=20.6 years

Answer:

24 years

Step-by-step explanation: