RRB Technician 2013 Ques 106
Question: Samantha, Jessica and Roseline begin to jog around a circular stadium. They complete their revolutions in 84 s, 56 s and 63 s respectively. After how many seconds will they be together at the starting point?
Options:
A) 336
B) 504
C) 252
D) Cannot be determined
Show Answer
Answer:
Correct Answer: B
Solution:
$ \therefore $ LCM $ =2\times 2\times 2\times 3\times 3\times 7=504 $ Hence, they will meat after 504 s.
BETA
