Zeenat and Nasreen participate in a circular race of 1.2 km. They start the race at a speed of 18 km/h and 27 km/h. respectively, from the same point at the same time. After how much time (in minutes) will they meet at the starting point for the first time, if they are running in the same direction?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 8.
Given that
The length of a circular race = 1.2 km
⇒ The speed of Zeenat = 18 km/h
⇒ The speed of Nasreen = 27 km/h
They run in the same direction
According to the question
⇒ The relative speed = 27 - 18 = 9 km/h
⇒ They will meet at the starting point for the first time = (1.2/9) × 60 = 8 minutes