Given: The ratio of coins of 2 rupees, 1 rupees and 50 paise = 3 : 4 : 5 Calculation: The ratio of value (price) of 2 rupees, 1 rupees and 50 paise = (2 × 3) : 4 : (5/2) = 6 : 4 : 5/2 ⇒12 : 8 : 5 The ratio of value (price) of 2 rupees, 1 rupees and 50 paise = 12x : 8x : 5x According to the question 12x + 8x + 5x = 250 ⇒ 25x = 250 ⇒ x = 250/25 ⇒ x = 10 Value (price) of 1 rupees coins = 8 × 10 = 80 Therefore, the correct answer is 80.