Any multiple of 40.
20 40
20, 40
20 pinkgal333:20, 40, 60 are all common multiples.
The answer is 40 because 20x2=40 and 5x8=40.
20, 40 and 60
20, 40, 60, 80 and so on.
They are: 20, 40 and 60
40, 80, 120, 160, 200
The multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, and so on. The multiples of 10 are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, and so on.
The first 5 multiples of 4 and 20 are 20, 40, 60, 80, 100
20... this is also known as the lowest common denominator.20 And 40
20, 40, 60 and so on.