conversations.from: human
conversations.value: Can you explain how to solve this math problem: A 20 person classroom is filled with 40% girls. If 5 new boys join the classroom, what is the new percentage of girls in the class?
conversations.from: assistant
conversations.value: The number of girls in the classroom is 20 * 40% = 8 girls
  Before new boys join, the number of boys in the classroom is 20 - 8 = 12 boys
  If 5 new boys join, the new number of boys is 12+5=17 boys and the new total is 20+5=25 total people
  The new percentage of girls in the class is 8 girls / 25 total people = 32%