A constant distance from Chennai to Bangalore is covered by Express train at 100 km/hr. If it returns to the same distance at 80 km/hr, then the average speed during the whole journey is

A constant distance from Chennai to Bangalore is covered by Express tr

1.	A constant distance from Chennai to Bangalore is covered by Express train at 100 km/hr. If it returns to the same distance at 80 km/hr, then the average speed during the whole journey is
A.	90.20 km/hr
B.	88.78 km/hr
C.	88.98 km/hr
D.	88.89 km/hr
Answer» E.

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A constant distance from Chennai to Bangalore is covered by Express train at 100 km/hr. If it returns to the same distance at 80 km/hr, then the average speed during the whole journey is

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