1.

A covers 1/4th of his journey at 20 km/h and 1/3rd of the rest at 25 km/h and half of the rest at 30 km/h and rest at the speed of 40 km/h.What is the average speed of A?

Answer»

13(78/89)km/h
12 km/h
26(86/89)km/h
28 km/h

Answer :C


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