Answer :
Ragini's flight departs at 10 am Sydney time, when it's 4:30 am in Delhi. Given the flight has a duration of 13 hours, she would arrive in Delhi at 5:30 pm of the same day.
Ragini's flight departs from Sydney at 10 am Sydney time. Knowing that when it is 1 pm in Sydney, it is 7:30 am in Delhi, at 10 am in Sydney, it is 4:30 am in Delhi. The flight has a duration of 13 hours. Therefore, the arrival time in Delhi is calculated by adding the flight duration to Delhi time at Sydney's departure. That gives us 4:30 am + 13 hours = 5:30 pm. So, Ragini would arrive in Delhi at 5:30 pm local time.
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