Number System Ques 9
Question
Philip, Tom and Brad start jogging around a circular field and complete a single round in 18 , 22 and 30 seconds respectively. In how much time will they meet again at the starting point?
(1) 8 mins. 15 secs
(2) 21 mins
(3) 16 mins. 30 secs.
(4) 12 mins.
(5) None of these
(Indian Bank PO Exam. 02.01.2011)
Show Answer
Answer: (3)
Solution: (3)
Required time $=LCM$ of 18 , 22 and 30 seconds $=990$ seconds $=\frac{990}{60}$ minutes $=16$ minutes 30 seconds
BETA
