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 ?  Pick
A) 26 minutes and 18 seconds  B) 45 minutes  C) 42 minutes and 36 seconds  D) 46 minutes and 12 seconds  E) 48minutes and 15 seconds
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.   answer :46 minutes and 12 seconds
<result>D</result>
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 ?