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A person completes a journey of 30 km at a speed of 6 km / h and a journey of the remaining 40 km at a speed of 8 km / h. What is his average speed of travel for the entire journey?
5Q:
A person completes a journey of 30 km at a speed of 6 km / h and a journey of the remaining 40 km at a speed of 8 km / h. What is his average speed of travel for the entire journey?
- 17 km/hourtrue
- 2$$ {6{4\over11}}{km/hour}$$false
- 38 km/hourfalse
- 47.5 km/hourfalse
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