conversations.from: human
conversations.value: I would love to understand how to solve this problem: At the museum, Bethany saw 4 times more still lifes than portraits. If she saw 80 paintings total, how many portraits did she see?
  Can you explain?
conversations.from: assistant
conversations.value: Let s be the number of still lifes Bethany saw and p be the number of portraits. We know that s + p = 80 and s = 4p.
  Substituting the second equation into the first equation, we get 4p + p = 80
  Combining like terms, we get 5p = 80
  Dividing both sides by 5, we get p = 16