Question

A financial Math problem from http://saab.org

Answer 1

if i'm not mistaken you can solve it by solving the system of equations

\[\large x=300*20(1+i)^{ 20*4}\]
\[\large 5x=300*40(1+i)^{ 40*4}\]

Answer 2

I mean
\( \begin{cases} \large x=300*5(1+i)^{ 20} \\\large 5x=300*10(1+i)^{ 40} \end{cases} \)

where i is the interest.

Answer 3

but that doesn't seem to get the right answer either.

Answer 4

:*

Answer 5

don't remember much but it has to do with the future value of an annunity Amount 300 and 10 periods ( every 4 years for 40 years)

Answer 6

Here is a solution generated by http://saab.org
@zimmah @triciaa1 @Lena772

Answer 7

Ah thanks, it's a little more complicated then i initially thought, but it does make sense.