conversations.from: human
conversations.value: Tim spent $50.00 on Chinese take-out.  80% of the cost went to 4 entrees.  The rest of the money went to 2 appetizers that each cost the same amount.  How much was the price of a single appetizer?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: He spent $50.00 and 80% of the meal went to entrees so he spent 50*.80 = $40.00 on entrees
  He spent $50.00 and $40.00 went to entrees so that leaves $50 - $40 = $10.00 for appetizers
  Each appetizer costs the same amount and he spent $10.00 all together so each appetizer is $10/2 = $5.00