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Races & Games · Question 58 of 73

Question 58

EasyOriginal question

Two runners start together from the same point on a 360 m circular track and run in opposite directions at 3 m/s and 5 m/s. After how many seconds do they first meet?

Options for question 58

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. Running towards each other, they close the gap at 88 m/s.

  2. One lap between them takes 3608=45\frac{360}{8} = 45 seconds.

Worth noting

180 seconds uses the relative speed for the same directions.

Concept
Meeting when running opposite ways
Typical time
60 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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Ten questions from Races & Games, at your own pace.

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