Use your mind !!!!
2..What is a percent of b divided by b percent of a?
3.One of Mr. Horton, his wife, their son, and Mr. Horton's mother is a doctor and another is a lawyer.
a) If the doctor is younger than the lawyer, then the doctor and the lawyer are not blood relatives.
b) If the doctor is a woman, then the doctor and the lawyer are blood relatives.
c) If the lawyer is a man, then the doctor is a man.
Whose occupation you know?