Given: The amount divided among the three persons are in the ratio = 4 : 9 : 2 Concept: If N is divided into a : b, then First part = N × a/(a + b) Second part = N × b/(a + b) Calculation: Share of the first person, the second person and the third person = 4x : 9x : 2x According to the question 9x–4x=1200 ⇒5x=1200 ⇒x=1200/5 ⇒x=240 ∴ Share of the third person =2×240=Rs.480