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20 December, 08:23

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

+2
Answers (1)
  1. 20 December, 10:03
    0
    By using 72 rule

    Time=72/rate

    T=72:3.5

    T=20.6 years
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