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Question

# A car travels half of the distance with constant velocity 40 km/h and another half with a constant velocity of 60 km/h along a straight line. The average velocity of the car is

A
24 km/h
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B
48 km/h
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C
60 km/h
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D
40 km/h
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Solution

## The correct option is B 48 km/hSuppose total distance is 2x km thentime taken in traveling the distance first x will be t1=x40 and the time taken in traveling the distance second x will be t2=x60 now the average velocity can be calculated as V=total distancetotal time=2xx40+x60=2×40×6040+60=48Km/h

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