Asked by JB

What is the shortest length of cable that can be cut into either a whole number of 18-ft pieces or a whole number of 30-ft pieces?
Answered by Reiny
That would just be the LCM of 18 and 30

18 = 2*3*3
30 = 2*3*5

so we need 2*3*3*5 = ....
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