Question 859498
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Hi,
 In General {{{A(t) = P(1+r/n)^(nt)}}}
A = Accumulated Amount $25,000
P= principal = $10,000
r= annual rate = 
n= periods per year = 4 
t= years = 12
{{{25000/ 10000 = (1+r/4)^(48)}}}
 {{{root(48, 2.5) = 1 + .25r}}}
     (1.019 - 1)/.25 = r = .076  0r r = 7.6%