Okay so we know 1,743 people went to the fair yesterday and now today 576 MORE people went to fair, so the key word ''MORE'' means addition so all we have to do is simply add the same amount of people who went to the fair yesterday, with the new people who went today, so if we do 1,743 PLUS 576 we get our answer.
Answer: 2319 people are at the fair today.