conversations.from: human
conversations.value: Carrie was given ten twenties and 140 quarters by her aunt to use for lunch. If she spent all the quarters and 3/5 of the twenties, calculate the total amount of money she paid for the lunch.
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Since she spent all the quarters, she paid her lunch partly by quarters totaling 140*$0.25 = $35
  She also used 3/5*10 = 6 of the twenties to pay for the lunch.
  The total amount of the twenties that she used is 6*$20 = $120
  She spent $120+$35 = $155 on the lunch.