SOLUTION: a piece of a material can be cut into equal length, either 20cm or 24 cm or 30cm long. find the length of the shortest piece of string for which this is possible.

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Question 888905: a piece of a material can be cut into equal length, either 20cm or 24 cm or 30cm long. find the length of the shortest piece of string for which this is possible.

Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
20 = 2^2 * 5
24 = 2^3 * 3
30 = 2 * 3 * 5

least common multiple = LCM(20, 24, 30)= 2^3 * 3 * 5 = 120