Vince is trying to fit two boxes into the trunk of his car. One box is 1/2 of a foot tall and the other is 2 4/5 feet tall. Stacked on top of each other, what is the combined height of the two boxes? Write your answer as a fraction or as a whole or mixed number.
GIVING BRAINLIEST TO THE PERSON WHO ANSWERS IT <3 :)

Of 400 people at the school carnival, 95% are students and the rest are teachers. a. how many students are at the school carnival? b. if 55% of the students at the school carnival are boys, how many are girls? c. how many teachers are at the school carnival? d. if 35% of the teachers are male and the rest are female, how many female teachers are at the carnival?