human
Jessica was half her mother's age when her mother died. If her mother were alive now, ten years later, she would have been 70. How old is Jessica currently?
assistant
How old was Jessica's mother when she died? ** If Jessica's mother would be alive today, ten years later after her death, she would be 70, meaning she died at 70-10=<<60=60>>60
How old was Jessica when her mother died? ** If Jessica was half her mother's age when her mother died, she was 1/2*60=30 years old.
How old is Jessica currently? ** Currently, ten years later, Jessica is 10+30=<<10+30=40>>40 years old.
#### 40