A person travelled from hyderabad to chennai at an average speed of 30 kmph and then came bvack to hyderabad at an average speed of 90 kmph along the same route. What is the average speed for the enti

A person travelled from hyderabad to chennai at an average speed of

1.	A person travelled from hyderabad to chennai at an average speed of 30 kmph and then came bvack to hyderabad at an average speed of 90 kmph along the same route. What is the average speed for the enti
A.	75 kmph
B.	60 kmph
C.	45 kmph
D.	cannot be determined
Answer» D. cannot be determined

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A person travelled from hyderabad to chennai at an average speed of 30 kmph and then came bvack to hyderabad at an average speed of 90 kmph along the same route. What is the average speed for the enti

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