1. Mark for Review There are 450 tiles In a box. of these MIes. 6% are black. How many black tiles are in the box? square Answer Proviow:

To solve this problem, we need to calculate 6% of the total number of tiles in the box. Here's the step-by-step solution:

### Step 1: Write down the given information
- Total number of tiles = 450
- Percentage of black tiles = $6\%$

### Step 2: Use the formula for percentage
The formula to calculate a percentage of a quantity is:
$$\text{Percentage value} = \left( \frac{\text{Percentage}}{100} \right) \times \text{Total Quantity}$$

Substitute the values:
$$\text{Number of black tiles} = \left( \frac{6}{100} \right) \times 450$$

### Step 3: Simplify the calculation
$$\text{Number of black tiles} = 0.06 \times 450$$
$$\text{Number of black tiles} = 27$$

### Final Answer:
There are **27 black tiles** in the box.