conversations.from: human
conversations.value: Find a solution for this math problem: A family's water and electricity bills average $30 a month for the first 4 months and $24 a month for the last 2 months. If the family's bills were averaged over all 6 months, what would the average monthly bill be?
conversations.from: assistant
conversations.value: The sum of the bills of the family in the first 4 months is $30/month x 4 months = $120.
  The sum of the bills of the family in the last 2 months is $24/month x $2 = $48.
  The sum of the bills of the family over the 6 months is $120 + $48 = $168.
  Hence, their average monthly bill is $168/6 months = $28/month.