What is 15% of 200?

**The reasoning** To find 15% of 200, convert the percentage to a decimal or fraction, then multiply: 15% = 15/100 = 0.15 So: 0.15 × 200 = 30 Or think of it this way: 10% of 200 = 20, and 5% of 200 = 10. Add them: 20 + 10 = **30**. The principle here is **percentage as "parts per hundred"** — 15% means 15 out of every 100. **Why the wrong options tempt you** - **Option A (15)** tricks you if you just write down the percentage number itself without actually calculating. - **Option C (45)** might catch you if you mistakenly multiply 15 × 3 or confuse your working. - **Option D (150)** is the classic trap — you might have divided 200 by 15 backwards, or found what percentage 200 is of something else. **Quick takeaway** Always convert the percentage to decimal (move the point two places left), then multiply — 15% means "multiply by 0.15," not by 15!