conversations.from: human
conversations.value: Solve the math problem: It takes John 5 minutes to get to the first side of the Rubik's cube.  The second and third sides each take twice that long.  The last 2 sides each take half as long as the first, and once you get the 5th side you have all 6 sides.  How long does the Rubik's cube take?
conversations.from: assistant
conversations.value: The second and third side each take 2*5=10 minutes
  So they take 10*2=20 minutes together
  The last 2 sides take 5/2=2.5 minutes
  So they take 2.5*2=5 minutes
  So the total time is 5+20+5=30 minutes