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Question
A man covers a total distance of 100 km on bicycle. For the first 2 hours, the speed was 20 km/hr and for the rest of the journey, it came down to 10 km/hr. The average speed will be :
Options:
A .  $$12\frac{1}{2}$$ km/hr
B .  13 km/hr
C .  $$\frac{1}{8}$$ km/hr
D .  20 km/hr
Answer: Option A

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