leanne's answer to Amir's Primary 4 Maths Singapore question.
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a) Perth
In order to reach the next day, the flight must be a night time flight.
By taking 20 50 flight, the duration is 5h 21mins
If you add this duration to the flight timing, he will arrive in Perth the next day (past 24h) as compared to other night timings in the list.
b) from diagram, latest time she needs to leave airport to head to concert is 640pm.
640pm = 1840h
Look for the HK duration, it is 3h 42 mins
1840 h - 342 = 1458h
This is the time she can reach airport the latest.
Therefore timing had to be before 1458 (258pm) under HK
In order to reach the next day, the flight must be a night time flight.
By taking 20 50 flight, the duration is 5h 21mins
If you add this duration to the flight timing, he will arrive in Perth the next day (past 24h) as compared to other night timings in the list.
b) from diagram, latest time she needs to leave airport to head to concert is 640pm.
640pm = 1840h
Look for the HK duration, it is 3h 42 mins
1840 h - 342 = 1458h
This is the time she can reach airport the latest.
Therefore timing had to be before 1458 (258pm) under HK
Date Posted:
3 years ago
So latest time is 1340
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