Two runners start together from the same point on a 500 m circular track and run in the same direction at 7 m/s and 5 m/s. After how many seconds do they first meet?

\frac{125}{3}

secondsCorrect answerYour answer

\frac{500}{7}

secondsCorrect answerYour answer249 secondsCorrect answerYour answer250 secondsCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer D

Correct answer: D

Worth noting

$\frac{125}{3}$ seconds uses the relative speed for opposite directions.

Ten questions from Races & Games, at your own pace.

Explanation