A train covers 85 m in passing a signal post. What is the length of the train?

Answer

To find the length of the train that covers 85 meters while passing a signal post, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Problem**:
- The train passes a signal post, and during this process, it covers a distance of 85 meters. The question asks for the length of the train.

2. **Visualizing the Scenario**:
- Imagine a signal post standing still. As the train approaches the signal post, the front of the train reaches the signal first. The entire train must pass the signal post for it to be considered as having "passed" it.

3. **Identifying Key Points**:
- When the front of the train reaches the signal post, the entire train must move forward until the end of the train has also passed the signal post.

4. **Calculating the Length of the Train**:
- The distance covered by the train while passing the signal post (85 meters) is equal to the length of the train itself. This is because the entire length of the train must clear the signal post.

5. **Conclusion**:
- Therefore, the length of the train is 85 meters.

### Final Answer:
The length of the train is **85 meters**.

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