Two cars start taking laps of a circular track of 3.6 kms at the same time of 12:00 PM. They start from the same point and they are moving in the same direction. Their speeds are 72 kmph and 90 kmph respectively. At what time will the cars meet again?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 12:12 PM.
Total distance = 3.6 km
Relative speed in the same direction = S1 - S2
Time = Distance/Speed
Time = 3.6/(90 - 72)
Time = (3.6/18) × 60 min
= 12 min
12:12 PM, the cars will meet again.