The train for Lucknow leaves every two and a half hours from New Delhi Railway Station. An announcement was made at the station that the 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 ?
Justification: Clearly, 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.