Sarah sold her stock for $56.25 a share, which reflected a roi of 7.7%. what was the original price of her stock?

Her's stock original price was approximately $52.23 a share.

ROI is found by dividing the gain from the investment minus the cost of the investment by the cost of the investment: ROI = 
We know the ROI (7.7%, or 0.077) and the gain ($56.25).

0.077= ⇔ 0.077= ⇔ 0.077= ⇔ 1.077= ⇔ cost= ⇔ cost≈52.23

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