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# Discussion

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

L.C.M. of $$252, 308$$ and $$198 = 2772$$
So, $$A, B$$ and $$C$$ will again meet at the starting point in $$2772$$ seconds.
i.e. $$46$$ minutes $$12$$ seconds.