30% of 200.

**The reasoning** To find a percentage of a number, convert the percentage to a decimal (or fraction) and multiply: 30% = 30/100 = 0.3 So: 30% of 200 = 0.3 × 200 = **60** Think of it this way: "percent" means "per hundred" (from Latin). So 30% literally means "30 out of every 100." If you have 200, that's *two* sets of 100, so you'd have 30 + 30 = **60**. **Why the wrong options tempt you** - **A (30)**: You might just write down the percentage itself, forgetting to actually calculate it *of* 200. - **C (90)**: This comes from incorrectly adding 30 to 60, or confusing your steps. - **D (120)**: This would be 60% of 200, not 30% — you doubled the percentage somewhere. **Quick takeaway** When you see "X% of Y," always multiply: (X ÷ 100) × Y — and remember, percentages are usually *smaller* than the original number unless they exceed 100%.