Adam 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 Adam lived. Adam dies four years after his son died. Answers:
A) 84  B) 90  C) 81  D) 75  E) 66
A   Let us assume that Adam lived for p years.   p/6 + p/12 + p/7 + 5 + p/2 + 4 = x   =&gt; p = 84.   Therefore, 84dam lived for 84 years.
<result>A</result>
Adam 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 Adam lived. Adam dies four years after his son died.