conversations.from: human
conversations.value: Tom got 40 oranges and 70 apples. If he sold 1/4 of the oranges and 1/2 of the apples. How many fruits were left in total?
  Work out the solution step by step.
conversations.from: assistant
conversations.value: There are 40 + 70 = 110 oranges and apples altogether .
  He sold 40 x .25 = 10 pieces of oranges.
  He sold 70 x .50 = 35 pieces of apples.
  So, Tom was left with 110 - 10 - 35 = 65 pieces.