20/40 = 1/2 = 4/8 = 500/1000 = 250/500
These are all one half or 0.5
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The LCM and GCF of 40 and 20 are 40 and 20 respectively.
Since 20 is a factor of 40, it is automatically the GCF.
They can be: 10/1, 20/2, 30/3, 40/4 and 50/5
It's 10 i think...a lol
There can be only one greatest common factor for any set of numbers. GCF(40, 20) = 20.