There are two types of milk. The price of one type of milk is ₹70/litre and the price of other type of milk is ₹50/litre. If the two types of milk are mixed, the price of new mixture will be ₹55/litre. Find the ratio of the two types of milk in this new mixture.

1 : 1 1 : 2 1 : 4 1 : 3

1 : 3

⇒ The ratio of the two types of milk in this new mixture = 5 : 15 = 1 : 3.