On a man's tombstone, it is said that one sixth of his life was spent in childhood and one twelfth as a teenager. One seventh of his life passed between the time he became an adult and the time he married; five years later, his son was born. Alas, the son died four years before he did. He lived to be twice as old as his son did. How old did the man live to be?  Choose one.
A) 82	B) 83	C) 84	D) 85	E) 86
Let the age of man is x so that of son = x/2 (given)   now according to the given condition   (x/6) + (x/12) + (x/7) + 5 + (x/2) + 4 = x   or x = 84   ANSWER:84
<result>C</result>
On a man's tombstone, it is said that one sixth of his life was spent in childhood and one twelfth as a teenager. One seventh of his life passed between the time he became an adult and the time he married; five years later, his son was born. Alas, the son died four years before he did. He lived to be twice as old as his son did. How old did the man live to be?