Hi,

I have two equations... I want to find the minimum number of years when S2>S1

S1= 0.5n(22000+(n-1)400)

S2= (10000(1.07^n -1)/(1.07-1))

I tried really really hard to solve this, but I ended up with some crap where n should be a negative number, which is impossible. The answer must be 6.33, btw)

I would very much appreciate it if anyone can help me out.

Thanks in advance