conversations.from: human
conversations.value: There are 100 students in class and the ratio of boys to girls is 3:2. How many more boys than girls are there?
conversations.from: assistant
conversations.value: The class was divided into 3 + 2 = 5 parts.
  So each part is equal to 100/5 = 20 students.
  Since there are 3 parts for boys, then there are 20 x 3 = 60 boys in class.
  So there are 100 - 60 = 40 girls in class.
  Hence, there are 60 - 40 = 20 boys more than girls.