conversations.from: human
conversations.value: This math problem has got me stumped: The pet store can buy a goldfish for $.25 and sell it for $.75. The owner plans to use the profits from goldfish sales to buy a new tank, which costs $100. After one week, he is 45% short of the price. How many goldfish did he sell that week?
  Can you show me the way?
conversations.from: assistant
conversations.value: He is $45 short because 100 x .45 = 45
  He earned $55 off goldfish because 100 - 45 = 55
  He makes $.5 profit per goldfish because .75 - .25 = .5
  He sold 110 goldfish that week because 55 / .5 = 110