Varun and Sandeep started for a car race from the same point, in the same direction and at the same time on a circular track of length 1635 m with the speeds of 90 km/h and 108 km/h, respectively. After how much time (in s) will they meet again for the first time?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 327.
Length of track = 1635 m
Speed of Varun = 90 km/h = 90 × 5/18 = 25 m/sec
Speed of Sandeep = 108 km/h = 108 × 5/18 = 30 m/sec
Relative speed between Varun and Sandeep = 30 - 25 = 5 m/sec
Time = Length of track/Relative speed
⇒ 1635/5 = 327 sec
Thus, Varun and Sandeep will meet again for the first time after 327 seconds.