Question 476726
If it's compounded monthly, the monthly interest rate = 0.05/12
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2 = (1 + 0.05/12)^n (n = # of months)
log(2) = n*log(1 + 0.05/12)
n = log(2)/log(1 + 0.05/12)
n =~ 166.7 months
= 167 months