A and B are participants in a 1,800 m circular race. A is running at a speed of 24 km/h and B is running at a speed of 15 km/h. If both start from the same point and at the same time and run in the same direction, find the time when they will meet again. (up to two decimal points)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 720 sec.
Relative speed = 24 - 15 = 9 km/h
Time to meet again = 1.8/9 = 0.2 hours = 720 sec