Question
Raeann, Sarah and Penelope were each given a piece of string of equal length. Raeann cut hers into equal lengths of 4 cm, Sarah cut hers into equal lengths of 6 cm, and Penelope cut hers into equal lengths of 10 cm. If there were no remainder in each case, find the shortest length of string given to each of them.
4 m

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Raeann, Sarah and Penelope were each given a piece of string of equal length. Raeann cut hers into equal lengths of 4 cm, Sarah cut hers into equal lengths of 6 cm, and Penelope cut hers into equal lengths of 10 cm. If there were no remainder in each case, find the shortest length of string given to each of them.