Jack wrote a math problem document with 3 word problems. The first problem started with 71 dogs, then 10 more dogs came, so the total number of dogs would be 81. The second problem started with 14 bears, then 20 more bears came, so the total number of bears would be 34. The third problem started with 37 sharks, then 20 more sharks came, so the total number of sharks would be 57.