AC9M8M04Year 8MeasurementPractised on site

AC9M8M04 — Year 8 Measurement

Official Curriculum Content Description:

solve problems involving duration, including using 12- and 24-hour time across multiple time zones

Worked Examples (1)

Example 1Time Zones & Travel Duration

A traveller departs Cairns (AEST) at

12:50

and arrives in Darwin (ACST) at

14:55

local time. Local time in Darwin (ACST) is

-0.5

hours relative to Cairns (AEST). How many minutes did the flight take?

Common mistake: Forgetting to adjust for time zone difference or applying offset in wrong direction

Correct Answer:

155

Worked Solution:

Convert arrival time to origin time by subtracting the time zone offset (

-0.5\text{ hrs}

): - Destination arrival:

14:55

- Origin equivalent time:

14:55 - (-0.5\text{ hrs})

- Duration: difference between equivalent arrival and departure (

12:50

) is

155\text{ minutes}

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