Three persons A, B and C can complete one round of circular track in 8, 15 and 20 minutes respectively. If they start together at 8 AM from a certain point, at which time will they be together again at the starting point?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 10 AM
They start together and complete the track in 8, 15 and 20 minutes respectively.
So, they will meet after (LCM of 8, 15, 20) minutes.
⇒ 120 minutes = 2 hours
So, the time will be (8 + 2) = 10 AM