conversations.from: human
conversations.value: Find a solution for this math problem: John weighs 220 pounds when he starts exercising.  He manages to lose 10% of his body weight.  He then gains back 2 pounds.  How much does he weigh at the end?
conversations.from: assistant
conversations.value: He lost 220*.1=22 pounds
  So after gaining some weight back he was 22-2=20 pounds lighter than before
  So his weight is 220-20=200 pounds