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In a morning walk, three persons step off together and their steps measure `40 cm, 42 cm` and 45cm, respectively. What is the minimum distance each should walk so that each can cover thesame distance in complete steps?

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In a morning walk,three persons step off together and their steps measure 40cm,42cm and 45cm ,respectively.What is the minimum distance each should walk so that each can cover thesame distance in complete steps?

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