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Train A takes 9 hours more than train B ...

Train A takes 9 hours more than train B to cover a distance of 612 km. If its speed is doubled then it takes 3 hours less than the time taken by train B. The speed of the train B is :

A

1.2 km/h

B

51km/h

C

30.6km/h

D

40.8km/h

Text Solution

Verified by Experts

The correct Answer is:
D
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