Two projects have equal net present values when calculated using a 6% annual effective interest rate. Project 1 requires an investment of $10,000 immediately and will return $8,000 at the end of one year and $15,000 at the end of two years. Project 2 requires investments of $10,000 immediately and $X in two years. It will return $3,000 at the end of one year and $14,000 at the end of three years. Find the difference in the net present values of the two projects if they are calculated using a 5% annual effective interest rate.