SOLUTION: find the common multiple of 20, 30, and 40. (Show your work)

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Question 42370: find the common multiple of 20, 30, and 40.
(Show your work)
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The simplest way is to list multiples of each and find the smallest number they have in common...so
20 ==> 20, 40, 60, 80, 100, 120
30 ==> 30, 60, 90, 120
40 ==> 40, 80, 120
There you have it...120