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The average speed of a bus in its whole ...

The average speed of a bus in its whole journey when it travels a given distance between two places with a speed of 20 km `hr^(-1)` and returns back with a speed of 12 km `hr^(-1)` is _________.

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To find the average speed of the bus for its entire journey, we can follow these steps: ### Step 1: Define the Distance Let the distance between the two places be \( D \) kilometers. ### Step 2: Calculate Time for Each Leg of the Journey - **Time for the first leg (going)**: The bus travels the distance \( D \) at a speed of 20 km/h. \[ ...
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