conversations.from: human
conversations.value: The ratio of the amount of money Cara, Janet, and Jerry have is 4:5:6. If the total amount of money they have is $75, calculate the loss Cara and Janet will make if they combine their money to buy oranges and sell them at 80% of the buying price.
  Can you solve this problem?
conversations.from: assistant
conversations.value: The sum of the ratios representing the amount of money the three has is 4+5+6=15
  If the total amount of money they have is $75, the amount of money Cara has represented by the fraction 4/15 is 4/15*$75=$20
  Similarly, the amount of money Janet has represented by the fraction 5/15 of the total ratio is 5/15*$75=$25
  Combined, Cara and Janet have $20+25=$45
  If Cara and Janet buy goods worth $45 and sells them at 80% of the buying price, the selling price of the goods will be 80/100*$45=$36
  Since they bought the goods at $45 and sold them at $36, Janet and Cara would run at a loss of $45-$36=$9