Identify which one of the following is a rate: 17.5 °C17.5 °C12122 21​ 227 m227 m 2 360 km / hr60 km / hr4

1. Break Down the Problem

To identify a rate among the provided options, we need to understand what constitutes a "rate." A rate typically expresses a quantity per unit of another quantity, often involving time.

2. Relevant Concepts

• Temperature (°C): Not a rate, as it measures temperature without a reference to another quantity.
• Distance (m): A measurement of length without reference to time.
• Speed (km/hr): A rate, as it measures distance traveled (in kilometers) per unit of time (in hours).

3. Analysis and Detail

Let’s analyze each option in terms of whether it represents a rate:

1. 17.5 °C: This is a temperature measurement.
2. 12122: This seems to be a number without context.
3. 227 m: This represents a distance measurement.
4. 360 km/hr: This signifies that something travels 360 kilometers in one hour, representing a rate.
5. 60 km/hr: Similar to the above, this indicates a speed of 60 kilometers per hour, also a rate.
6. 4: This appears to be a standalone number without context.

4. Verify and Summarize

From the analysis, the values that express a quantity per unit of time (speed) are valid rates. Here, both 360 km/hr and 60 km/hr qualify as rates.

Final Answer

The rates from the provided options are 360 km/hr and 60 km/hr.