conversations.from: human
conversations.value: Amanda needs 12 more marbles to have twice as many marbles as Katrina, and Mabel has 5 times as many marbles as Katrina. If Mabel has 85 marbles, how many more marbles does Mabel have than Amanda?
  Find the solution.
conversations.from: assistant
conversations.value: Katrina has 85/5 = 17 marbles.
  Twice as many marbles as Katrina is 17 x 2 = 34
  Amanda has 34 -12 = 22 marbles.
  Mabel has 85 - 22 = 63 more marbles than Amanda