conversations.from: human
conversations.value: I'm stuck on this math problem: In eight years, Mr. Bernard will be 3 times as old as Luke is now. If Luke is 20, what is 10 years less than their average age?
  Can you help?
conversations.from: assistant
conversations.value: If Luke is 20, he will be 20+8 = 28 years old in eight years.
  In eight years, Mr. Bernard will be 3 times as old as Luke is now, a total of 3*20= 60 years old.
  Mr. Bernard is now 60-8= 52 years old
  The sum of their current ages is 52+20 = 72
  Their average age is 72/2 =36
  10 less than their average age is 36-10 = 26 years.