1) The train for Chandigarh leaves every two and a half hour from New Delhi Railway Station. An announcement was made at the station that the train for Chandigarh had left 40 min ago and the next train will leave at 18 h. At what time was the announcement made?
Explanation:
Time of the last train leaving the station = (18 : 00 - 2 : 30) h = 15 : 30 h
But this happens 40 min before the announcement is made.
Therefore, Time of making announcement = (15 : 30 + 0 : 40) = 16 : 10 h.