conversations.from: human
conversations.value: Rebecca bought 22 items for her camping trip, including tent stakes, packets of drink mix, and bottles of water.  She bought 3 times as many packets of drink mix as tent stakes.  She also bought 2 more bottles of water than she did tent stakes.  How many tent stakes did she buy?
  How to solve this?
conversations.from: assistant
conversations.value: Let x represent the number of tent stakes
  Drink Mix: 3x
  Bottles of Water: x+2
  Total: x+3x+x+2=22
  5x+2=22
  5x=20
  x=4 tent stakes