Multiple choice

A circular running path has a circumference of 726 metres. Two men start from the same point and walk in opposite directions at the speeds of 3.75 km/hr and 4.5 km/hr. They will meet for the first time after

  1. 5.52 minutes

  2. 6 minutes

  3. 5.28 minutes

  4. 4.9 minutes

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relative speed = 3.75 + 4.5 = 8.25 km/hr. Convert to m/min: 8.25 * 1000 / 60 = 137.5 m/min. Time = Distance / Speed = 726 / 137.5 = 5.28 minutes.