77.
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 next meet at the starting point again ?
A:
46 minutes 12 seconds
B:
45 minutes
C:
42 minutes 36 secondws
D:
26 mintues 18 seconds
The answer is:
A
