conversations.from: human
conversations.value: The snack machine at Richmond High School sells candy bars for $2 each and chips for $.50 each. How much money, in dollars, will 5 students need in total if each of them gets 1 candy bar and 2 bags of chips?
  Work out the solution step by step.
conversations.from: assistant
conversations.value: The students buy 2*5=10 bags of chips.
  10 bags of chips cost 10*0.5=5 dollars.
  5 candy bars cost 5*2=10 dollars.
  They will need 10+5=15 dollars.