Sohan and Amit started a car race from the same point in the same direction and at the same time on a circular track of length 1125 m with speeds of 36 km/h and 54 km/h, respectively. After how much time (in seconds) will they meet for the first time since the start of the race?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 225.
Given that, Distance = 1125 m
Speed of Sohan = 36 km/h
Speed of Amit = 54 km/h
If two person move in the same direction, relative speed = Difference between the two speeds
Relative speed of Sohan and Amit = 54 - 36 = 18 km/h
Relative speed of Sohan and Amit in m/sec = = 5 m/sec
Now, Distance = Speed × Time
Time taken by Sohan and Amit to meet for the first time = = 225 sec
Hence Sohan and Amit will meet for the first time after 225 sec.