1.

Suresh started his journey form P to Q by his bike at the speed of 40 km/h and then, the same distance he travelled on his foot at the speed of 10 km/h from Q to R. Then he returned from R to P via Q at the speed of 24 km/h. The average speed of the whole trip is:

A. 18.5 km/h
B. 19.8 km/h
C. 18.2 km/h
D. 19.2 km/h
Answer» E.


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