Respuesta :

You want to find the ratio of BC to AB. You know that the length of BC is 16 and AB is 20. So, it is 16:20.  However, you want to find the simplest form so find the greatest common factor of 16 and 20 which is 4. Divide both by 4 to get 4:5.
ythø
I'm thinking it would be 16:20 as a ratio. Simplified, this is 4:5. :) 
Hope this helps! 

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