Q117
A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they again at the starting point ?
A.
36 minutes 22 seconds
B.
46 minutes 22 seconds
C.
36 minutes 12 seconds
D.
46 minutes 12 seconds
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
LCM of 252, 308 and 198 = 2772Hence, they all will be again at the starting point after 2772 seconds.
or 46 minutes 12 seconds.