# Define 1 : 1 ratio.

A ratio is defined as a comparison of two quantities.

## Answer: 1 : 1 ratio means one-part of the first quantity is equal to one part of the second quantity.

The ratio a : b helps us to know how much one part of a is equivalent to one-part of b.

**Explanation:**

a : b is also defined as the simplest form of the fraction a/b.

For example,

- 1 pound of cake contains, flour and sugar in a 1 : 1 ratio. That means in that mixture both the items are equally balanced, for 100 grams of flour 100 grams of sugar needs to be added.
- The volumes of a 1-liter water bottle and 1-liter petrol can are in a 1 : 1 ratio.

Here, 1: 1 means one part of a is exactly equal to one part of b.

1 : 1 = 2 : 2 = 3 : 3 = ...... = a : a

Therefore, a 1: 1 ratio means the compared items are equal in quantity with respect to each other.