conversations.from: human
conversations.value: Delta, Beta and Gamma decided to share 40 donuts. Delta took 8 donuts and Beta took three times as many as Gamma. How many donuts did Gamma receive?
  What is the solution?
conversations.from: assistant
conversations.value: Let x = the number of donuts Gamma took.
  The total donuts Gamma and Beta have is 40 - 8 = 32 donuts.
  3x is the number of donuts for Beta.
  3x + x is the number of total donuts for Beta and Gamma.
  If we add the two x terms, we get 4x = 32.
  If we divide both sides by 4, we get x = 8, so Gamma has 8 donuts.