Let the Income of Peter and Paul are 4x and 3x Let the Expenses of Peter and Paul are 3y and 2y So, According to question 4x – 3y = 6000 ... (i) 3x – 2y = 6000 ... (ii) Now, From equation (i) and equation (ii) 4x – 3y = 3x – 2y ∴ x = y ⇒ y = x Now, put the value of y in equation (i), we get Þx = 6000 ∴ 4x = 24000 3x = 18000 Monthly Incomes of Peter and Paul are ₹ 24000 and ₹ 18000 respectively.