Convert decimal to percent correctly: What is 0.025 when expressed as a rate percent?

Introduction / Context:
Decimal-to-percent conversion is fundamental in percentage arithmetic. Multiplying a decimal by 100 converts it to percent. This question reinforces accuracy with small decimals where misplaced decimal points are common mistakes.

Given Data / Assumptions:
The decimal is 0.025.

Concept / Approach:
Percent means “per hundred.” Therefore, to express a decimal d as a percent, compute d * 100% and append the percent symbol. Ensure the decimal point moves two places to the right during multiplication by 100.

Step-by-Step Solution:

Verification / Alternative check:
Reverse: 2.5% back to decimal is 2.5/100 = 0.025, confirming the conversion is consistent both ways.

Why Other Options Are Wrong:
0.25% corresponds to 0.0025. 37.5% or 25% are unrelated. Formatting duplicates may confuse, but the numerically correct percent is 2.5% only.

Common Pitfalls:
Moving the decimal point one place instead of two, or forgetting the percent symbol. Always multiply by 100 and then attach %.

Final Answer:
2.5%