how much are sales worth in present worth? what is the rate of return? 10% interest rate

Sales Profile and Future Projection (in thousands of USD vs. years) $450 $390 $400 $360 $350 $330 $310 $300 $300 $270 $250 $240 $220 $200 $180 $180 $180 $150 $150 $120 $120 $120 $120 $100 $50 $ -5 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 Operating costs are fixed at 50% of sales per year for years 1 - 10 and $60K in year 0. Tiene La Feria is on sale for $200K, right now