Given: Marks of Gopal = Marks of Dhiraj + 280 Marks of Dhiraj + 120 = 60% increase in the marks of Dhiraj Calculation: Let the marks of Dhiraj be x. Marks of Dhiraj + 120 = 60% increase in the marks of Dhiraj ⇒x+120=x+0.6x ⇒0.6x=120 ⇒x=200 Marks of Gopal =200+280=480 ∴ The marks of Gopal is 480.