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Races & Games · Question 67 of 73

Question 67

MediumOriginal question

Two cyclists ride the same way round a 2 km circular track from the same point, at 18 km/h and 12 km/h. After how many minutes do they first meet?

Options for question 67

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. The faster gains 18−12=618 - 12 = 6 km/h on the slower.

  2. A lap of 2 km takes 26=13\frac{2}{6} = \frac{1}{3} hour, that is 20 minutes.

Worth noting

4 minutes adds the speeds, which is for riding towards each other.

Concept
Meeting when running the same way
Typical time
90 s
Your time
—
The rule this testsCircular tracks
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Ten questions from Races & Games, at your own pace.

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