conversations.from: human
conversations.value: Solve the following math problem: Ali has four $10 bills and six $20 bills that he saved after working for Mr. James on his farm. Ali gives her sister half of the total money he has and uses 3/5 of the remaining amount of money to buy dinner. Calculate the amount of money he has after buying the dinner.
conversations.from: assistant
conversations.value: Four $10 bills have a value of 4*$10 =$40
  The six $20 bills also are worth 6*$20 = $120
  Ali has $40+$120 = $160
  When he gives his sister half of the money, he remains with the other half, which totals 1/2*$160 = $80
  He then spends 3/5*$80 = $48 on dinner.
  The total amount of money that Ali has now is $80-$48 = $32