Lesson
Are you ready?
Can you find the difference between two times ?
Examples
Example 1
Find the value of 5 hours 10 minutes - \, 2 hours 40 minutes.
Worked Solution
Idea summary
We can use subtraction to find the difference between times, but we have to be careful when we need to regroup and remember:
| \displaystyle 1 \text{ hour} | \displaystyle = | \displaystyle 60 \text{ minutes} |
| \displaystyle 1 \text{ minute} | \displaystyle = | \displaystyle 60 \text{ seconds} |
Timetables
This video shows you some of the important things that you should consider when looking at public timetables.
Examples
Example 2
If Charlie catches a train at 4:46 pm from Circular Quay, what time will he arrive at Central?
| Station | pm | pm | pm | pm | pm | pm | pm |
|---|---|---|---|---|---|---|---|
| \text{Museum} | 4:21 | 4:25 | 4:27 | 4:31 | 4:36 | 4:40 | |
| \text{St. James} | 4:23 | 4:29 | 4:33 | 4:36 | 4:42 | ||
| \text{Circular Quay} | 4:27 | 4:30 | 4:33 | 4:37 | 4:46 | ||
| \text{Wynyard} | 4:29 | 4:32 | 4:39 | 4:41 | 4:48 | ||
| \text{Town Hall} | 4:32 | 4:35 | 4:42 | 4:51 | |||
| \text{Central} | 4:36 | 4:39 | 4:40 | 4:46 | 4:46 | 4:47 | 4:55 |
Worked Solution
Idea summary
Every timetable is different. Before you start answering questions on a timetable you haven't seen before, look at all the information, such as:
what do the rows mean?
what do the columns mean?
are there abbreviations or symbols and do you know what they mean?