Let the no. of ₹ 1 coins = x and the no. of ₹ 2 coins = y According to the question: x + y = 50 ... (1) x.1 + 2. y = 75 ... (2) on solving (1) and (2), we get 2y – y = 75 – 50 ⇒ y = 25 put value of y in equation (1), we get x = 50 – y = 50 – 25 = 25 Hence, number of ₹ 1 and ₹ 2 coins are 25 and 25 respectively.