When I was married 10 years ago my wife is the 6th member of the family Today my father died and a b...........

Quantitative Aptitude (CCS) Average

When I was married 10 years ago my wife is the 6th member of the family. Today my father died and a baby born to me.The average age of my family during my marriage is same as today. What is the age of Father when he died ?

56yrs

55yrs

58yrs

60yrs

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Explanation:

Solution:
Let the Father be x years when he died
Average Age 10 years ago be A
Total Age 10 years ago = 6*A
Total Age after 10 years (Just before father’s Death) = 6A + 6*10 = 6A + 60
Father Died and Baby was born => the Total number of people in the family is Same (6)
(6A +60 – x)/6 = 6A/6
= A + 10 -(x/6) = A
= x/6 = 10
= x = 60yrs.