Multiple choice

Rehman walks at 8 km/hr and Roma cycles at 13 km/hr towards each other. What was the distance between them when they started if they meet after 36 minutes?

  1. 12.6 kms

  2. 18.9 kms

  3. 15.8 kms

  4. 9.5 kms

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

Relative speed = 8 + 13 = 21 km/hr. Time = 36 minutes = 36/60 hours = 0.6 hours. Distance = Speed * Time = 21 * 0.6 = 12.6 km.

AI explanation

Using the concept of relative speed, since they are moving towards each other, their relative speed is the sum of their individual speeds: 8 + 13 = 21 km/hr. The time taken to meet is 36 minutes, which is 36/60 hours. The total starting distance is Relative Speed * Time, giving 21 * (36/60) = 12.6 kms. The distance between them when they started was 12.6 kms.