conversations.from: human
conversations.value: I need help with this problem:
  Isabella is twice as old as Antonio.  In 18 months, she will be 10 years old.  How many months old is Antonio?
conversations.from: assistant
conversations.value: First, we determine that Isabella will be 10*12= 120 months old at age 10, to find a number to compare her age to Antonio's with.
  Then we subtract the 18 months from the total of 120 months to find 120-18= 102 months, which is the age Isabella is currently.
  Since at 102 months old Isabella is twice as old as Antonio, we take 102/2= 51 months as Antonio's age.