H Suppose Shaan invested just $30,000 of his own money and had a $96.000 mortgage with an interest rate of 85 percent. After three years, he sold the property for $145,000 (a) What is his gross profit? Gross prola (b) What is his net profit or loss? (Input the amount as a positive value) (c) What is the rate of return on investment? (Negative amount should be indicated by a minus sign. Enter your answer as a percent rounded to 1 decimal place.) Parcent return on investment Nev>