Question
Ivory, Emily and Usha were each given a piece of thread of equal length. Ivory cut hers into equal lengths of 5 m, Emily cut hers into equal lengths of 8 m, and Usha cut hers into equal lengths of 10 m. 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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Ivory, Emily and Usha were each given a piece of thread of equal length. Ivory cut hers into equal lengths of 5 m, Emily cut hers into equal lengths of 8 m, and Usha cut hers into equal lengths of 10 m. If there were no remainder in each case, find the shortest length of thread given to each of them.