conversations.from: human
conversations.value: I'm stuck on this math problem: Joan is preparing sandwiches for a family potluck. She decides to make ham sandwiches and grilled cheese sandwiches. One ham sandwich requires 2 slices of cheese, and one grilled cheese sandwich requires 3 slices of cheese. She uses a total of 50 slices of cheese to make the sandwiches. If she makes 10 ham sandwiches, how many grilled cheese sandwiches does she make?
  Can you help?
conversations.from: assistant
conversations.value: The number of cheese slices used to make the ham sandwiches is 10 * 2 = 20 cheese slices.
  The number of cheese slices used to make the grilled cheese sandwiches is 50 - 20 = 30 cheese slices.
  The number of grilled cheese sandwiches she makes is 30 / 3 = 10 grilled cheese sandwiches.