conversations.from: human
conversations.value: Bill gets paid $20 every hour he works up to a total of 40 hours, after which he gets paid double that amount per hour.  How much does Bill get paid for a 50-hour workweek?
  Find the solution.
conversations.from: assistant
conversations.value: Bill makes $20 an hour for the first 40 hours, meaning he gets paid 40*20= 800 dollars.
  For the remaining 10 hours, Bill gets paid double the amount of $20, meaning he makes 20*2=40 dollars an hour.
  Since he worked 10 hours at that $40 an hour rate, that means he gets paid 10*40= 400 dollars for the final 10 hours.
  In total, this means Bill gets paid 800+400=1200 dollars for his workweek.