Kathy, Joelle and Risa were each given a piece of ribbon of equal length. Kathy cut hers into equal lengths of 5 cm, Joelle cut hers into equal lengths of 8 cm, and Risa cut hers into equal lengths of 10 cm. If there were no remainder in each case, find the shortest length of ribbon given to each of them.
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40
Multiples of 8: 8, 16, 24, 32, 40
Multiples of 10: 10, 20, 30, 40
Shortest length of ribbon given to each of thecm
= Lowest common multiple of 5 cm, 8 cm and 10 cm
= 40 cm
Answer(s): 40 cm