Question

A , B and C start at the same direction to run around a circular stadium . A complete a round in 252 seconds , B in 308 seconds and C in 198 seconds , all starting at the same point . After what time they meet again at the starting point ?
A. 15 minutes 15 seconds
B. 42 minutes 30 seconds
C. 42 minutes
D. 46 minutes and 12 seconds

Answer 1

Correct Answer - D
L.C.M of 252 , 308 and 198 = 2772 .
So , A , B and C will again meet at the starting point in 2772 sec i.e., 46 min 12 sec