He make $113000 a year , how much that possible to save $50000 a years , he have $3.113 trillion dollars , is that possible or not ? true or false?how many he can save 17 years of his working?
+118609 
C=50000
n=17
FV=3.113*10^12
i unknown
$$3.113*10^{12} = 50000*(\frac{(1+i)^{17}-1}{i})$$
http://www.wolframalpha.com/input/?i=3.113*10^12+%3D+50000*%28%281%2Bx%29^17-1%29%2Fx
I think that this is possible if the interest rate is 200% per annum. (correct to nearest percent)
check
$${\frac{{\mathtt{50\,000}}{\mathtt{\,\times\,}}\left({{\mathtt{3}}}^{{\mathtt{17}}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}{{\mathtt{2}}}} = {\mathtt{3\,228\,504\,050\,000}}$$
there you go 
+118609
C=50000
n=17
FV=3.113*10^12
i unknown
$$3.113*10^{12} = 50000*(\frac{(1+i)^{17}-1}{i})$$
http://www.wolframalpha.com/input/?i=3.113*10^12+%3D+50000*%28%281%2Bx%29^17-1%29%2Fx
I think that this is possible if the interest rate is 200% per annum. (correct to nearest percent)
check
$${\frac{{\mathtt{50\,000}}{\mathtt{\,\times\,}}\left({{\mathtt{3}}}^{{\mathtt{17}}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}{{\mathtt{2}}}} = {\mathtt{3\,228\,504\,050\,000}}$$
there you go
