16 is \( 20 \% \) of what number?

To find out what number 16 is 20% of, you can use a simple equation. Let \( x \) be the unknown number. The equation can be set up as: \[ 16 = 0.20 \times x \] To solve for \( x \), divide both sides by 0.20: \[ x = \frac{16}{0.20} = 80 \] So, 16 is 20% of 80! Now, here's a fun fact: Percentages have a long history in mathematics, with their use dating back to ancient civilizations. The term "percent" comes from the Latin phrase "per centum," meaning "by the hundred." Ancient merchants used percentages for trade, allowing them to calculate profit margins effectively! Additionally, understanding percentages is not just about math—it's a vital skill in real life. Whether calculating discounts while shopping, understanding interest rates on loans, or managing budgets, percentage calculations help us make informed decisions, ensuring we get the best deals!