prompt: Five years ago, the sum of Sebastian's age and his sister's age was 3/4 of their father's age. How old is their father today if Sebastian is 40 years old and 10 years older than his sister?
messages.content: Five years ago, the sum of Sebastian's age and his sister's age was 3/4 of their father's age. How old is their father today if Sebastian is 40 years old and 10 years older than his sister?
messages.role: user
messages.content: If Sebastian is 40 years old and 10 years older than his sister, his sister is 40-10=<<40-10=30>>30 years old.
  Five years ago, Sebastian was 40-5=<<40-5=35>>35 years old.
  Similarly, Sebastian's sister's age was 30-5=<<30-5=25>>25 years old.
  The sum of their ages five years ago was 25+35=<<25+35=60>>60
  Five years ago, the sum of Sebastian's age and his sister's age was 3/4 of their father's age, meaning their father's age was 60 / 3/4 = 80 years.
  The father's age is now 80+5=<<80+5=85>>85
  #### 85
messages.role: assistant