conversations.from: human
conversations.value: In a dye-making process, a young lady mixes 3/5th of 20 liters of water with 5/6th of 18 liters of vinegar. How many liters of the mixture are obtained?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: 3/5th of 20 liters of water is 20*(3/5) = 12 liters
  5/6th of 18 liters of vinegar is 18*(5/6) = 15 liters
  12 liters of water mixed with 15 liters of vinegar gives 12+15 = 27-liter mixture