A, B. C start running at the same time and at the same point in the same direction in a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds. After what time will they meet again at the starting point

A, B. C start running at the same time and at the same point in the same direction in a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds. After what time will they meet again at the starting point
1). 26 minutes 18 seconds
2). 42 minutes 36 seconds
3). 45 minutes
4). 46 minutes 12 seconds

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