A train travelling at 40km/h takes 3 hours for a journey. How long will it take the train to complete the same journey,travelling at 90km/h?

2. A train travelling at 40 km/h takes 3 hours for a journey. How long will it take the train to complete the same journey, travelling at 90 km/h?
A. 2 hours
B. 1 hour
C. 4 hours
D. 1 hour 20 min

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