Unit 8 · Rates and Ratios
Two-Leg Journey — What Is the True Average Speed?
Lesson 3 of 3
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About this lesson
Average speed is total distance divided by total time — never average the two speeds unless the times are equal.
Chapters
0:00Introduction
0:21The Question
1:01Calculating the Total Distance Travelled
1:33Calculating the Total Time
1:53Calculating the Average Speed
2:13Exam Strategy — The Base-10 Division Shortcut
2:56Confirming the Final Option
Question
A vehicle travelled from Place A to Place B. It travelled 160 kilometres in the first 2 hours and 210 kilometres in the next 3 hours. How many kilometres did the vehicle travel per hour on average?
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