1.

Three cyclists A, B and C with respective speeds of 8 m/sec , 10 m/sec and 12 m/sec are cycling around a circular track of length 120 m. After how many seconds will they meet for the first time right

Answer»

60 seconds



The times taken by the three CYCLISTS to complete one ROUND each are
A = 120/8 SEC
B = 120/10 sec
C = 120/12 sec.
i.e. 15 sec, 12 sec, 10 sec respectively.
Hence, After a time which is the LCM of (15, 12, 10) sec, they will meet right at the starting point for the FIRST time after 60 seconds.



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