A train travels from Station A to Station B covering 200 km and returns to Station A in 10 hours. The speed and the velocity of the train are _____ and _____, respectively.

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A train for Lucknow leaves every two and a half hours from New Delhi Railway Station. An announcement was made at the station that a train for Lucknow had left 40 minutes ago and the next train will leave at 18.00 hrs. At what time was the announcement made?

The correct option is D 16:10 hrsThe last train left two and a half hours before 18:00 hours i.e. at 15:30 hours. But this happened 40 minutes before the announcement was made. So, the announcement was made at 16:10 hours.

A train for Lucknow leaves every two and a half hours from New Delhi Railway Station. An announcement was made at the station that a train for Lucknow had left $40$ minutes ago and the next train will leave at $18.00$ hrs. At what time was the announcement made?

The correct option is D $16 : 10$ hrs
The last train left two and a half hours before $18 : 00$ hours i.e. at $15 : 30$ hours. But this happened $40$ minutes before the announcement was made.
So, the announcement was made at $16 : 10$ hours.