Answer:
59.5 months
Explanation:
initial investment x (1 + appreciation rate)āæ = initial investment + $100,000 + ($400 x n)
$220,000 x (1 + 0.75%)āæ = $320,000 + $400n
1.0075āæ = $320,000/$220,000 + $400n/$220,000
1.0075āæ = 1.4545 + 0.001818n
I tried to solve it by trial and error:
50 months:
1.453 ā 1.5454
60 months:
1.566 ā 1.564 ā Almost
61 months:
1.577 ā 1.565
59 months:
1.554 ā 1.562 ā Almost
59.5 months:
1.56 = 1.56 Ā