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A train covers a distance in 50 min, if ...

A train covers a distance in 50 min, if it runs at a speed of 48 km/h on an average. The speed at which the train must run to reduce the time of journey to 40 min is

A

60 km/h

B

55 km/h

C

40 km/h

D

None of these

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The correct Answer is:
A
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