Q15
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.
26 minutes and 18 seconds
B.
42 minutes and 36 seconds
C.
45 minutes
D.
46 minutes and 12 seconds
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
L.C.M. of 252, 308 and 198 = 2772So, A, B and C will again meet at the starting point in 2772 sec. i.e., 46 min. 12 sec.