Question
‘X’, ‘Y’ and ‘Z’ can complete one lap around a
circular track in 10 seconds, 15 seconds, and 20 seconds respectively. If they all start from the same position at the same time, after how many seconds will they all be back at the starting point together?Solution
ATQ,
Required time taken = LCM of 10, 15 and 20 = 60 seconds
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