How do you find ROI percentage?

I need help with a problem.

Say I find something for sale at $5000.
When I buy it I will receive $375 per month for the next 27 months.
That will equal $10125. What will my ROI be? Return on investment APR?

 

Don't get you question clearly.

 

Go check it out at http://www.investopedia.com/terms/r/returnoninvestment.asp#axzz1uwHbQrug

I hope that it helps out with your question. Assuming that i don't misinterpret your question.

 

To calculate the RIO you need to divide the sum of investment needed by the pure profits made...