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Three friends A. B and C start running around a circular stadium and complete a single round in 8, 18 and 15 seconds respectively. After how many minutes will they meet again at the starting point for the first time?

A12

B6

C8

D15

Answer:

B. 6

Read Explanation:

The required time will be the LCM of 8, 18 and 15 which is 360 sec or 6 minutes.


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