Problema Solution

The number of years it will take for $510 to grow to $1066.34 at 5 percent compounded annually is? Round to one decimal place

Answer provided by our tutors

let


t = the number of years


A = $1066.34 the future value after t year


P = $510 is the principal


m = 1 the number of compounding periods per year


n = m*t = t*1 = t the number of compounding periods


r= 0.05 the annual interest rate as a decimal


A = P(1 + r)^n


1066.34 = 510(1 + 0.05)^t


510(1 + 0.05)^t = 1066.44


1.05^t = 1066.44/510


t ln(1.05) = ln(1066.44/510)


t = ln(1066.44/510) / ln(1.05)


t = 15.1 years


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it will take 15.1 years for the money to grow from $510 to $1066.34.