Arithmetic Aptitude - Time Travel questions with answers


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  1. Sunita started his journey from Austin on Sunday, 13th August 2023 at 16:25 (Austin time) and reached San Jose the same evening at 18:08 (San Jose time).
    Austin time is ahead of San Jose time by 2 hours.
    What was the duration of the flight?

    1. 3 hours 35 minutes
    2. 3 hours 5 minutes
    3. 5 hours 40 minutes
    4. 3 hours 43 minutes
    View Answer

    Answer: D. 3 hours 43 minutes

    Explanation: Austin time is ahead of San Jose time by 2 hours. Flight reached San Jose at 18:08 (San Jose time).
    This implies that, as per Austin time, flight reached San Jose at 18:08 + 2 hours = 20:08 (Austin time).
    Hence, the total duration of the flight is the time difference between start and end time of the flight as per the Austin time, which is the time difference between 20:08 and 16:25 which is 3 hours and 43 minutes


  2. Sunita started his journey from San Jose (to Austin) on Friday, 11th August 2023 at 10:15 am (San Jose time). The duration of the flight was 3 hours and 30 minutes.
    Austin time is ahead of San Jose time by 2 hours.
    What was the time in Austin when his flight landed there?

    1. 15:45 pm (Austin time)
    2. 13:45 pm (Austin time)
    3. 14:15 pm (Austin time)
    4. 12:55 pm (Austin time)
    View Answer

    Answer: A. 15:45 pm (Austin time)

    Explanation: Flight started from San Jose at 10:15 am (San Jose time) Total flight time is 3 hours and 30 minutes.
    Hence, as per San Jose time, flight landed at 10:15 + 3:30 = 13:45 pm (San Jose time)
    Now, Austin time is ahead of San Jose time by 2 hours.
    Hence, the time in Austin when it is 13:45 pm in San Jose is 13:45 + 2 hours = 15:45 pm


  3. Gary started his travel from New York at 3:15 pm on Friday, December 15, 2017 (EST) and boarded a flight to India.
    The duration of the flight was 15 hours.
    India time is 10 hours and 30 minutes ahead of New York time (EST).
    What was the time in India when his flight landed there?

    1. 5:30 pm on Saturday, December 16, 2017 (India time)
    2. 6:45 pm on Friday, December 15, 2017 (India time)
    3. 16:45 pm on Saturday, December 16, 2017 (India time)
    4. 10:40 am on Friday, December 15, 2017 (India time)
    View Answer

    Answer: C. 16:45 pm on Saturday, December 16, 2017 (India time)

    Explanation: Flight started from New York at 3:15 pm (New York time) on Friday, December 15, 2017.
    Total flight time is 15 hours.
    Hence, as per New York time, flight landed at 3:15 pm + 15 hours = 6:15 am (New York time), on Saturday, December 16, 2017 (date changes).
    Now, India time is ahead of New York time by 10 hours and 30 minutes.
    Hence, the time in India when it is 6:15 am in New York is 6:15 am + 10 hours + 30 min = 16:45 pm, on Saturday, December 16, 2017.


  4. Gary started his return journey from India at 11:10 pm on Saturday, 31 December, 2018 (India time). He reached New York on Sunday, 1 January, 2019 at 2:00 am (New York time).
    What was the duration of his flight from India to New York?
    India time is 10 hours and 30 minutes ahead of New York time (EST).

    1. 12 hours 40 minutes
    2. 13 hours 20 minutes
    3. 12 hours 20 minutes
    4. 13 hours 40 minutes
    View Answer

    Answer: B. 13 hours 20 minutes

    Explanation: India time is 10 hours and 30 minutes ahead of New York time (EST).
    Flight reached New York on Sunday, 1 January, 2019 at 2:00 am (New York time).
    This implies that, as per India time, flight reached New York at:
    2:00 am + 10 hours + 30 minutes= 12:30 pm (India time) on Sunday, 1 January, 2019.
    Hence, the total duration of the flight is the time difference between start and end time of the flight as per the India time, which is the time difference between 11:10 pm (on Saturday, 31 December, 2018) and 12:30 pm (on Sunday, 1 January, 2019) which is 13 hours and 20 minutes.


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