Given: Monthly income = Rs 2000 3 months income = 4 months expenditure Formula used: Income = Expenditure + Saving Calculation: According to the question, 4 months income of man = 4 × 2000 = 8000 And his expenditure of 4 months = 3 × 2000 = 6000 The money saved by the man in 4 months = 8000 - 6000 = 2000 ∴ The money saved by the man in an year (12 months) = 3 × 2000 = Rs 600