Problema Solution

A principal of $3700 is invested at 6.5% interest, compounded annually. How many years will it take to accumulate $6000 or more in the account?

Answer provided by our tutors

We are looking for a positive number n such that 

3700*(1+0.065)^n >= 6000

Then we have

1.065^n >= 60/37~1.622 =====> ln(1.065^n)>=ln(1.622) ====>

       n >= ln(1.622)/ln(1.065)~0.4834/0.063 ~7.67

Therefore, it will take 8 years to accumulate $6000 or more.   

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