Which of the following is a correct example of a rate?

Which of the following is a correct example of a rate?

• A. BM2
• B. BM3
• C. BM1
• D. BM4

Answer: (A)

A rate is a quantity that measures how fast something changes, expressed as a amount per unit time. It captures the idea of change over time rather than a static total. The BM2 option is the correct example because it represents a quantity described per unit time, fitting the idea of a rate. The other BM options describe amounts or measurements without tying them to time, so they don’t convey how quickly something changes.

A rate is a quantity that measures how fast something changes, expressed as a amount per unit time. It captures the idea of change over time rather than a static total.

The BM2 option is the correct example because it represents a quantity described per unit time, fitting the idea of a rate. The other BM options describe amounts or measurements without tying them to time, so they don’t convey how quickly something changes.