Unit 8 · Rates and Ratios
Same Distance, Two Speeds — How Much Longer?
Lesson 4 of 7
About this lesson
Now for the most instructive speed question type: the same distance, two different speeds, and you need the time difference. The setup looks simple, but students who rush consistently choose the wrong answer because they subtract speeds instead of computing both times separately.
Chapters
Question
A train travels from Town A to Town B at 80 km/h.
The return journey is at 60 km/h.
The distance between the two towns is 240 km.
How much longer does the return trip take compared to the outward trip?
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