conversations.from: human
conversations.value: To be promoted to the next school year, Jane takes 3 tests that together must total at least 42 points. On her first test, Jane scored 15 points, on the second test she scored 18 points. What is the minimum number of points she must score on the third test to pass?
  How to solve this?
conversations.from: assistant
conversations.value: Adding the points obtained in the first two tests, Jane scored 15 + 18 = 33 points.
  To pass, Jane must score 42 - 33 = 9 points.