Question
Barbara, Mary and Emily were each given a piece of thread of equal length. Barbara cut hers into equal lengths of 4 cm, Mary cut hers into equal lengths of 5 cm, and Emily cut hers into equal lengths of 8 cm. If there were no remainder in each case, find the shortest length of thread given to each of them.
4 m

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Barbara, Mary and Emily were each given a piece of thread of equal length. Barbara cut hers into equal lengths of 4 cm, Mary cut hers into equal lengths of 5 cm, and Emily cut hers into equal lengths of 8 cm. If there were no remainder in each case, find the shortest length of thread given to each of them.