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NSWMaths Standard 2Quick questions
Year 11: Working with Time
Quick questions on Interpreting timetables for HSC Maths Standard 2
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is reading a timetable grid?Show answer
Read down a column to follow one service through its stops, and read across a row to compare what time each service reaches a particular stop. The table below is a small train timetable; each lettered column is one train and each row is a station.
What is finding the duration of a journey?Show answer
The duration of any single leg is arrival minus departure. Clock times are not decimals - there are minutes in an hour, not - so the safe method is to split the subtraction at the whole hour. For Train A from Riverbank () to Harbour (): count minutes from up to , then more minutes to , giving minutes. An equally reliable method is to turn each time into minutes-after-midnight and subtract: is minutes and is minutes, so minutes.
What is average speed from a timetable?Show answer
Average speed measures how fast the trip was on average over the whole distance, not the speed at any instant. It is the total distance divided by the total time:
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