conversations.from: human
conversations.value: Hannah is buying some apples for $5 per kilogram. If she would get a 40% discount on each kilogram of apples, how much would she pay for 10 kilograms of them?
  Solve this problem.
conversations.from: assistant
conversations.value: A 40% discount on each kilogram of apples would mean the price being 40/100 * 5 = $2 smaller.
  So one kilogram of apples would cost not $5, but 5 - 2 = $3.
  So for 10 kilograms of apples Hannah would pay 3 * 10 = $30.