A eld o cer set out from his branch for an inspection of a cluster of villages 240 kilometres away. He covered the rst 96 kilometres of the journey upon a national highway at a uniform 48 kilometres…

Question

A eld o cer set out from his branch for an inspection of a cluster of villages 240 kilometres away. He covered the rst 96 kilometres of the journey upon a national highway at a uniform 48 kilometres an hour and the remaining 144 kilometres upon a district road at a uniform 36 kilometres an hour. He returned by the very same route, and his average speed for the whole of the journey out and back taken together worked out at 48 kilometres an hour. At what uniform speed did the o cer travel upon the return journey?

PYQPulse · Accepted Answer

60 km an hour

Answer: B. 60 km an hour

Answer: B. 60 km an hour