To travel 648 km, an Express train takes 12 hours more than Rajdhani. – McqOptions

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1.	To travel 648 km, an Express train takes 12 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 6 hours less thanÂ Rajdhani. The speed of Rajdhani is _____.
A.	36 km/hr
B.	18 km/hr
C.	45 km/hr
D.	27 km/hr
Answer» E.

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