I am not understanding these concepts at all, and I have to solve these two word problems.
"A survey of 500 television watches produces the following results: 285 watch football games, 195 watch hockey games, 115 watch basketball games, 45 watch football and basketball games, 70 watch football and hockey games, 50 watch hockey and basketball games, and 50 don't watch any of the three types of games.
a. How many people watch all three types of games?
b. How many people watch just one type of sport?"
And this one too.
"Of 100 people questioned, 37 eat fruits, 33 eat vegetables, 9 eat cheese and fruits, 12 eat cheese and vegetables, 10 eat fruits and vegetables, 12 eat only cheese, and 3 eat all three offerings.
a. How many people surveyed eat cheese?
b. How many do not eat any of the offerings?"