conversations.from: human
conversations.value: There are four members in one household. Each member consumes 3 slices of bread during breakfast and 2 slices of bread for snacks. A loaf of bread has 12 slices. How many days will five loaves of bread last in this family?
  How to solve this?
conversations.from: assistant
conversations.value: A total of 3 + 2 = 5 slices of bread are consumed by each member every day.
  So a family consumes a total of 5 x 4 = 20 slices of bread every day.
  Five loaves of bread have 5 x 12 = 60 slices of bread.
  Thus, the 5 loaves of bread last for 60/20 = 3 days.