Latest TCS Aptitude Question SOLUTION: Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three years later, one member died at the age of 60 years and a child was born durin

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(#M40012322) TCS Numerical Ability question Keep an EYE

Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three
years later, one member died at the age of 60 years and a child was born during the same year. After
another three years, one more member died, again at 60, and a child was born during the same year.
The current average age of this eight member joint family is nearest to:
[1] 23 years [2] 22 years [3] 21 years [4] 25 years [5] 24 years

Asked In TCS (11 years ago)

Unsolved Read Solution (7)

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Read Solution (7) :

Ashish Tyagi  (11 years ago)

231+(8*3)-60=195
195+(8*3)-60=159
159+(8*4)=191
avg age= 191/8=23.875
ans=24yr

Is this solution Helpfull? Yes (52) | No (8)  

ashish  (10 years ago)

Ten years ago, the sum of the ages of 8 members in the family = 231
After 3 years, the age of every member increases by 3; hence the total age increases by 8? 3 = 24.
The total age is 231 + 24 = 255
A member of 60 years age died = 255 – 60 = 195
Similarly, again after 3 years,
Sum of the ages of all members = 195 + 24 = 219
Again a member of age 60 died = 219 – 60 = 159
Now they have asked the sum in the current years, so the remaining years are 4.
Hence the sum increases by 8 * 4 = 32
Total sum of the ages of 8 members in the present year = 159 + 32 = 191
Average age = 191 / 8 = 23.8 = 24 (approx)

Is this solution Helpfull? Yes (20) | No (3)  

raj  (11 years ago)

Before 10 years, age of 8 persons=231
Then, After 3 years
Member who died was of 60 years after 3 years, so we will add only 3*7 years to the total not 3*8 as 8th member’s age is already given as 60 years.
0 years for new born baby.
Total age = 231+(3*7)-60+0 = 192
Again, After 3 years
Member who died was of 60 years, and 0 years for new born baby…
Total Age = 192+(3*7)-60+0 = 153
=> Avg. Age= 153/8 =19.12=19
This was avg. age before 10-3-3 =4 years ago, as we were calculating from Before 10 years.
So,
Current Age= 19+4 = 23 years.

Is this solution Helpfull? Yes (9) | No (6)  

anant  (11 years ago)

231-60+(7*3)=192
192-60+(7*3)=153
153+(8*4)=185
avg age= 185/8=23.125
ans=23

Is this solution Helpfull? Yes (5) | No (20)  

vinod kumar  (11 years ago)

24 yrs ans is

Is this solution Helpfull? Yes (4) | No (6)  

nagabrahmam  (8 years ago)

231+(8*3)-60=195
195+(8*3)-60=159
159+(8*4)=191
avg age= 191/8=23.875
ans is 24yr

Is this solution Helpfull? Yes (1) | No   

pradip mali  (7 years ago)

24 because that person is 3 years is present and after 3 years his died
So count 8 member
Ans is 24

Is this solution Helpfull? Yes | No   

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