conversations.from: human
conversations.value: There are 10 students in a class. The average age of 9 of them is 8 years. By how many years will this average increase if the tenth student is (quite strangely) 28 years old?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: 9 students have an average age of 8 years so the sum of their ages is 9*8 = 72 years
  A tenth student who is 28 years old will make the sum 72+28 = 100 years
  The new average age will be 100/10 = 10 years
  This is 10-8 = 2 years higher than the previous average.