Mary, Esther and Xylia were each given a piece of rope of equal length. Mary cut hers into equal lengths of 4 cm, Esther cut hers into equal lengths of 6 cm, and Xylia cut hers into equal lengths of 9 cm. If there were no remainder in each case, find the shortest length of rope given to each of them.
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36
Multiples of 6: 6, 12, 18, 24, 30, 36
Multiples of 9: 9, 18, 27, 36
Shortest length of rope given to each of thecm
= Lowest common multiple of 4 cm, 6 cm and 9 cm
= 36 cm
Answer(s): 36 cm