A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?
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Q:
A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?
- 116 km/hr.false
- 222 km/hr.false
- 318.5 km/hr.true
- 421.3 km/hr.false
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