For an investment of $50,000 today, you will be entitled to receive payments each of the following three years. Your friends business will make payments to you of $15,000 at the end of this year (t=1), $25,000 at the end of next year (t=2), and $35,000 at the end of the following year (t=3). The interest rate is 6.5% per year.

What is the Net Present Value (NPV) of this investment opportunity?