A car travels from A to B at a speed of ...

A car travels from A to B at a speed of `20 km//hr` and returns at a speed of `30 km//hr`. The average speed of the car for the whole journey is

`5 km//h`

`24 km//h`

`25 km//h`

`50 km//h`

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SL ARORA-MECHANICS-Exercise

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