smc-3154-30-Time zones

Measurement, NAP-B3-NC22

This table shows the time difference between London, Tokyo and Brisbane on a given day.

When it is 7:15 am on Wednesday in Brisbane, what time is it in London?

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`text(9:15 pm on Tuesday)`

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`text(4:30 pm in Brisbane is 6:30 am in London,)`

`=>\ text(Brisbane is 10 hours ahead of London.)`

`:.\ text(7:15 am Wednesday less 10 hours is 9:15 pm)`

`text(on Tuesday.)`

Renee lives in Sydney. Mandeep lives in New Delhi.

When it is 8:05 am in Sydney, it is 2:35 am in New Delhi.

Renee makes a phone call to Mandeep when it is 7:00 am in New Delhi.

What time is it in Sydney?

`text(12:00 pm)`	`text(12:30 pm)`	`text(1:00 pm)`	`text(1:30 pm)`

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`text(12:30 pm)`

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`text(8:05 am less 2:35 am is)\ \ 5 1/2\ \ text(hours.)`

`=> text(Sydney is)\ \ 5 1/2\ \ text(hours ahead.)`

`:.\ text(When it is 7:00 am in New Delhi,)`

`text(it is 12:30 pm in Sydney.)`

When it is 10 am in Sydney, it is 6 am in Perth on the same day. A plane leaves Sydney at 11:30 am Sydney time and flies to Perth.

The flight takes 4 hours and 40 minutes.

What is the time in Perth when the plane arrives?

`11:10\ text(am)`	`12:10\ text(pm)`	`1:10\ text(pm)`	`2:10\ text(pm)`

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`text(12:10 pm)`

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`text(11:30 am in Sydney is 7:30 am in Perth.)`

`text(After 4 hours and 40 minutes flying time,)`

`text(it is 12:10 pm in Perth.)`