A and B go around a circular track of length 1200 m on a cycle at speeds of 36 kmph and 54 kmph. After how much time will they meet for the first time at the starting point?	Choices:
A) 240 sec B) 165 sec C) 186 sec D) 167 sec E) 168 sec
Time taken to meet for the first time at the starting point   = LCM { length of the track / speed of A , length of the track / speed of B}   = LCM { 1200/ (36 * 5/18) , 1200/ (54 * 5 /18) }   = LCM (120, 80)   =240 sec.   240 secnswer:240 sec
<result>A</result>
A and B go around a circular track of length 1200 m on a cycle at speeds of 36 kmph and 54 kmph. After how much time will they meet for the first time at the starting point?