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M: +2.00/-0.50

Four runners started running simultaneously from a point on a circular track. They took 400 seconds, 600 seconds, 720 seconds and 900 seconds to complete one round. After how much time did they meet at the starting point for the first time since the race started?

 

[SSC CHSL 3rd June 2022 Shift-1 With Answers]
A
B
C
D

EXPLANATION

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