conversations.from: human
conversations.value: Tommy is looking at his change collection. He has 10 more dimes than pennies. He has twice as many nickels as dimes. He has 4 quarters. He has 10 times as many pennies as quarters. How many nickels does he have?
  Find the solution.
conversations.from: assistant
conversations.value: Tommy has 40 pennies because 10 x 4 = 40
  Tommy has 50 dimes because 40 + 10 = 50
  Tommy has 100 nickels because 50 x 2 = 100