Question 895197
How long until you have to pay it back?  That determines the interest rate.  Let's assume it's one year.
2000 = 1700x
Divide each side by 1700
2000/1700 = x
x = 1.176
The principal is 1; the interest is 17.6%
If you have to pay it back in 6 months, the rate would be 35.1%.  If you have two years, then 8.8% (I'm simplifying it, but in the general area...)
That's pretty high.  You could get almost as good a rate from a loan shark.