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 meet again at the starting point?

Problems on L.C.M and H.C.F 19/10/2021

A. 26 min 18 sec
B. 42 min 36 sec
C. 45 min
D. 46 min 12 sec

L.C.M of 252, 308 and 198 = 2772

So, A, B and C will again meet at the starting point in 2772 sec, i.e., 46 min 12 sec.

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