Six years after buying 100 shares of xyz stock for $40 per share you sell the stock for 6400.

6400-4000/4000=0.6
6400/4000=1.6
yx exponent in parentheses
(1/4)=1.12468265
-1=0.12468265
=12.5

1 answer

What is the problem you're trying to solve?