Finance
posted by FinanceQ
You deposit a single amount of $50,000 in a savings account that pays 7.6% annual interest (compounded quarterly). How much will you have at the end of four and a half years?

helper
A(t) = P(1 + r/n)^nt
P = 50,000
r = 0.076
n = 4 (quarterly)
t = 4.5
A(4.5) = 50000(1 + 0.076/4)^(4(4.5))
A(4.5) = 50000(1 + 0.019)^(18)
A(4.5) = 50000(1.019)^(18)
A(4.5) = 50000(1.40325)
A(4.5) = 70,162.50
50,000 + 70,162.50 = 120,162.50 
helpi
thats must be wrong right?
because i got 50 000 (1+(14/4*100))^(4*4,5) = 70 162.54 after the four and the half year.
Not adding that with 50 000. Because you earned 20 162.54..
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