Three friends A, B and C start running around a circular stadium and complete a single round in 8, 18 and 15 seconds respectively. After how many minutes will they meet again at the starting point for the first time?

Q. Three friends J,K and L jog around a circular stadium and complete one round in 12, 18 and 20 seconds respectively. In how many minutes will all the three meet again at the starting point?

Q. Seema, Meena and Reena start jogging around a circular stadium and complete one round in 54 seconds, 42 seconds and 63 seconds respectively. Approximately after how many minutes they will meet again at the starting point?

Q. Amit, Sucheta and Neeti start running around a circular track and complete one round in 18 seconds, 24 seconds and 32 seconds respectively. In how many seconds will the three meet again at the starting point if they all have started running at the same time?

Q. Philip, Tom and Brad start jogging around a circular field and complete a single round in 18 seconds, 22 seconds and 30 seconds respectively. In how much time, will they meet again at the starting point?

Q. Four persons P, Q, R and S start running around a circular track simultaneously. If they complete one round in 10, 8, 12 and 18 minutes respectively, after how much time will they next meet at the starting point ?