Return on investment

Return on Investment (ROI) is a way of measuring how much money you make back when you spend money on something. It's like a score that shows how successful your investment is. For example, let's say you have $100 and you buy something that costs $50. When you sell that something you make back $60. The return on investment (ROI) is the difference between how much you spent and how much you made back ($60 - $50 = $10). $10 is your return on investment as that is the money you made back from your initial $100.