10. Twelve is what percent of \( 42 ? \)

To find out what percent twelve is of forty-two, you can use the formula: \[ \text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100 \] In this case, twelve is the part, and forty-two is the whole. Plugging in the numbers, we get: \[ \text{Percentage} = \left( \frac{12}{42} \right) \times 100 \approx 28.57\% \] So, twelve is approximately 28.57% of forty-two! For a fun twist, did you know that the concept of percentages dates back to the Romans? They used fractions to express parts of a whole. Today, percentages are everywhere – from your favorite store discounts to voting polls! It's like a numerical way of saying, “Let’s break it down to find out how much we’re really talking about!”