Two bodies move away from each other with speeds of 10 km/h and 5 km/h. Then their relative speed is _______.

Answer

To find the relative speed of two bodies moving away from each other, follow these steps:

### Step-by-Step Solution:

1. **Identify the Speeds of the Two Bodies**:
- The first body is moving at a speed of 10 km/h.
- The second body is moving at a speed of 5 km/h.

2. **Understand the Concept of Relative Speed**:
- When two bodies are moving away from each other, their relative speed is the sum of their individual speeds.

3. **Calculate the Relative Speed**:
- Add the speeds of both bodies:
\[ \text{Relative Speed} = \text{Speed of Body 1} + \text{Speed of Body 2} \]
- Substitute the values:
\[ \text{Relative Speed} = 10 \text{ km/h} + 5 \text{ km/h} = 15 \text{ km/h} \]

4. **Conclusion**:
- The relative speed of the two bodies moving away from each other is 15 km/h.

### Final Answer:
The relative speed is **15 km/h**.

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