Jack spent 1/6 of his lifetime in adolescence. His facial hair started growing after 1/12 more of his life. He successfully married his girlfriend Diana after 1/7 more of his life. Their son was born after 5 years from then. The son lived just 1/2 of what Jack lived. Jack dies four years after his son died.
How long did Jack live ? Answers:
A) 75  B) 90  C) 45  D) 80  E) 84
E   84   Explanation:   Let us assume that jack lived for p years.   p/6 + p/12 + p/7 + 5 + p/2 + 4 = x   =&gt; p = 84.   Therefore, Jack lived for 84 years.
<result>E</result>
Jack spent 1/6 of his lifetime in adolescence. His facial hair started growing after 1/12 more of his life. He successfully married his girlfriend Diana after 1/7 more of his life. Their son was born after 5 years from then. The son lived just 1/2 of what Jack lived. Jack dies four years after his son died.
How long did Jack live ?