Answer:
your father originally invest is $13035.72
Explanation:
given data
investment time = 33 years
interest rate = 4.25 percent
totaled $51,480.79
solution
we get present value by future value formula that is
future value = present value × [tex](1+r)^{t}[/tex] .........................1
put here value and we get
$51480.79 = present value × [tex](1+0.0425)^{33}[/tex]
solve it we get
present value = $13035.72
so your father originally invest is $13035.72