Respuesta :
the answer is 200. you would multiply 1000 by 80% giving you 800. 800 people didnt know the name so that leave 200 people did.
200 is the answer to your question because if you multiply 1000 by 80% you would get 800 people. And 800 people did not know the name so that gives us 200 people that know the congressman name.
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♡Hope it helped!♡ ♡If it did not help tell me in the comment box below!♡