conversations.from: human
conversations.value: Ronald wants to make profits by re-selling some phones he bought a week ago. He bought 200 units for just $3000, and he wants to gain a third of the initial investment in profits when all units are sold. Including the profit margin, what will be the selling price for each phone?
  Can you solve this problem?
conversations.from: assistant
conversations.value: The profit Ronald wants is $3000 / 3 = $1000
  The profit per phone sold will be $1000 / 200 phones = $5/phone
  The cost of each phone is $3000 / 200 phones = $15/phone
  The selling price including the profit will be $15/phone + $5/phone = $20