CONCEPT used:We will be using the concept of quadratic EQUATION for solving.Calculation:LET be assume present AGE of person is x⇒ x2 + (x + 1)2 + (x + 2)2 = 2030⇒ x2 + 2x - 675 = 0⇒ x = 25, -27∴ The REQUIRED result will be 25.