What is the ratio of 15 to 5?

The ratio of 15 to 5 is 3:1.

To understand this better, let's break it down. A ratio is a way to compare two quantities by showing how many times one value contains or is contained within the other. In this case, we are comparing 15 to 5. To find the ratio, we divide both numbers by their greatest common divisor (GCD). The GCD of 15 and 5 is 5.

When we divide 15 by 5, we get 3. Similarly, when we divide 5 by 5, we get 1. Therefore, the ratio of 15 to 5 simplifies to 3:1. This means that for every 3 units of the first quantity, there is 1 unit of the second quantity.

Ratios are often used in various real-life situations, such as cooking recipes, mixing paints, or comparing speeds. Understanding how to simplify and interpret ratios is a fundamental skill in GCSE Maths, as it helps in solving problems efficiently and accurately. Remember, always look for the greatest common divisor to simplify ratios to their simplest form.