conversations.from: human
conversations.value: I need a clearer understanding of how to solve: The price of an iPhone fell 10% in a particular month and another 20% in the second month.  If the initial price was $1000, calculate the price after the second month.
conversations.from: assistant
conversations.value: In the first month, the price of the iPhone fell by 10/100*$1000=$100
  The new price after the first month is $1000-$100 = $900
  In the second month, the price fell 20% further by 20/100*$900 = $180
  The new price after the second month is $900-$180 = $720