conversations.from: human
conversations.value: I need a clearer understanding of how to solve: Kendall is counting her change. She has a total of $4 in quarters, dimes, and nickels. If she has 10 quarters and 12 dimes, how many nickels does she have?
conversations.from: assistant
conversations.value: The total money from the quarters is 10 * $0.25 = $2.50
  The total money from the dimes is 12 * $0.10 = $1.20
  The total money from the nickels is $4 - $2.50 - $1.20 = $0.30
  The number of nickels Kendall has is $0.30 / $0.05 = 6 nickels