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If a person travels a certain distance at a speed of 10 km/h, and returns through the same route at a speed of 20 km/h, then what will be the average speed during the whole journey?
5Q:
If a person travels a certain distance at a speed of 10 km/h, and returns through the same route at a speed of 20 km/h, then what will be the average speed during the whole journey?
- 1$${{40\over3}}$$km/htrue
- 215 km/hfalse
- 3$${{10\over3}}$$km/hfalse
- 4$${{20\over3}}$$km/hfalse
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