Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 8)
8.
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
Answer: Option
Explanation:
Sum of the present ages of husband, wife and child = (27 x 3 + 3 x 3) years = 90 years.
Sum of the present ages of wife and child = (20 x 2 + 5 x 2) years = 50 years.
Husband's present age = (90 - 50) years = 40 years.
Discussion:
102 comments Page 11 of 11.
Sundar said:
2 decades ago
@Renu
The solution for your problem:
Lets take the age of father 10 yrs ago as x.
Then rest of the 5 members 10 yrs ago as y.
Now the mean age 10 yrs ago is = (x + y)/6 --(1)
and now as father is dead and all the ages of the other 5 members has risen by 10 each.
So mean age now =(y + 5(10))/6 ---(2)
Equating (1) and (2): (x+y)/6 = (y+50)/6
Be solving the above, we get x = 50.
So present age when he died
= x + 10
= 60 yrs.
The solution for your problem:
Lets take the age of father 10 yrs ago as x.
Then rest of the 5 members 10 yrs ago as y.
Now the mean age 10 yrs ago is = (x + y)/6 --(1)
and now as father is dead and all the ages of the other 5 members has risen by 10 each.
So mean age now =(y + 5(10))/6 ---(2)
Equating (1) and (2): (x+y)/6 = (y+50)/6
Be solving the above, we get x = 50.
So present age when he died
= x + 10
= 60 yrs.
RENU said:
2 decades ago
Question: 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?
Can anyone help me to find solution for this question AS SOON AS POSSIBLE?
Can anyone help me to find solution for this question AS SOON AS POSSIBLE?
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