What do you mean by 18 carat gold ?

Explanation

To understand what 18 carat gold means, we can break it down into several steps:

### Step 1: Understanding Carat Measurement
- The term "carat" is a measure of the purity of gold. Pure gold is defined as 24 carats. This means that in 24 carat gold, all 24 parts are gold, making it 100% pure.

### Step 2: Calculating Purity of 18 Carat Gold
- When we refer to 18 carat gold, it means that out of 24 parts, 18 parts are pure gold. To find the percentage of pure gold in 18 carat gold, we can use the formula:

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