Problem 17-2 Calculating the Return on Investment Using Financial Leverage [LO17-1] Dave bought a rental property for $490,000 cash. One year later, he sold it for $500,000. Suppose Dave invested only $80,000 of his own money and borrowed $410,000 interest-free from his rich father. What was his return on investment? Note: Negative amount should be indicated by a minus sign. Enter your answer as a percent rounded to 2 decimal places. Return on investment %