Multiple choice

A train travels from City X to City Y which are 840 km apart and in different time zones at an average speed of 60 kmph and arrives in City Y at 6:00 in the evening (City Y time). At what hour in the morning (City X time), did the train depart for City Y? (Note: The time in City X is an hour ahead of time in City Y)

  1. 4:00

  2. 5:00

  3. 6:00

  4. 7:00
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The train travels 840 km at 60 kmph, taking 14 hours. It arrives at 18:00 (City Y time). Since City X is one hour ahead, 18:00 in City Y is 19:00 in City X. Subtracting the 14-hour travel time from 19:00 gives 5:00 in the morning in City X.

AI explanation

Using the formula Time equals Distance divided by Speed, the journey takes 840 divided by 60, which is 14 hours. Since City X is one hour ahead of City Y, a local time of 6:00 pm in City Y is equivalent to 7:00 pm in City X. Counting back 14 hours from 7:00 pm gives a departure time of 5:00 am. The train departed at 5:00 in the morning.

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