Seema, Meena and Reema begin to walk around a circular stadium and they complete their revolutions in 54 s, 42 s and 63 s, respectively. After approximately how many minutes will they come together at the starting point? |
[SSC (CGL) 2011] |
A) 8 min
B) 10 min
C) 3 min
D) 6 min
Correct Answer: D
Solution :
LCM of 54, 42 and 63 = 378 s = 6.3 min |
Hence, after 6 min (approx.) they will come together at the starting point. |
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