conversations.from: human
conversations.value: Mike is shopping at the mall. He needs to buy a shirt, a new wallet, and some food for the evening. The shirt costs a third of the value of the wallet. The wallet is $60 more than the cost of the food, on which Mike spent $30. How much did Mike spend that day on the shopping?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: The wallet costs $60 more than the food, so it's $30 + $60 = $90.
  So the cost of the shirt is 1/3 * $90 = $30.
  Mike spent that day $30 + $30 + $90 = $150.