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.
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 thread given to each of them
= Lowest common multiple of 5 m, 8 m and 10 m
= 40 m
Answer(s): 40 m