Terry's investment of $2,200 in the stock market earned $528 in two years. Find the simple interest rate for this investment
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let's recall that a Centroid in a triangle cuts the Medians into a 2:1 ratio, or namely CG : GD are in a 2: 1 ratio, we can also look at it that the side CD is 2/3 of CD whilst GD is 1/3 of CD, so