conversations.from: human
conversations.value: Find the answer to this math problem: There are 4 more Muscovy ducks than Cayugas, and 3 more than twice as many Cayugas as Khaki Campbells. If there are 90 ducks total, how many Muscovies are there?
conversations.from: assistant
conversations.value: Let x represent the number of Khaki Campbell ducks.
  Cayugas:3+2x
  Muscovies:4+(3+2x)=7+2x
  Total: x+3+2x+7+2x=90
  5x+10=90
  5x=80
  x=16
  Muscovy: 7+2(16)=39