conversations.from: human
conversations.value: Solve the following math problem: Eighteen hours ago, Beth and I took 100 photographs of our project. Today, Beth and I will take 20% fewer photographs of the same project. If we were to take 300 photographs of the project, how many photographs would we take to reach the target?
conversations.from: assistant
conversations.value: If you took 100 photographs of the project 18 hours ago, and today 20% few photographs have been taken, then 20/100*100 = 20 fewer photographs of the project have been taken today.
  The total number of photographs of the project that have been taken today is 100-20 = 80
  So far, you've taken 80+100 = 180 photographs of the project.
  Since the target number of photographs is 300, the number of photographs that you need to take to reach the target is 300-180 = 120