Given
The family consists of two grandparents, two parents and three grandchildren
The average age of two grandparents = 67 years.
=> Total age of two grandparents = (67 * 2) = 134 years

The average age of two parents = 35 years
=> Total age of two parents = (35 * 2) = 70 years

The average age of three grand children = 6 years.
=> Total age of three grand children = (6 * 3) = 18 years.

Required Average age of the family = Total age of (two grandparents + two parents + three grand children) / Total members in the family
= ( 134 + 70 + 18 ) / (2 + 2 + 3)
= 222 / 7
= 31 (5 / 7) years

Let, father’s current age is A years.
Then, Man’s current age =[ (2/5)A ]years.
Therefore, [ (2/5)A + 8 ]= (1/2)(A + 8)
2(2A + 40) = 5(A + 8)
A = 40

et the present ages of son and father be x and (60 – x) years respectively.

Let the current age of Ajay and Vijay be 7x and 4x respectively.

`(7x – 6) / (4x + 6) = 1/1`

7x – 6 = 4x + 6
3x = 12
x = 4
Therefore, `(7x + 12) / (4x – 12) = (7**4 + 12) / (4 ** 4 -12) = 40/4 = 10/1`

Let the present age of Ravi = r
Then we have R= 10 + 3 = 13 years as Ravi’s 10th Birthday was three years ago
Now we have Ravi’s age after 10 years = r + 10
=> 13 + 10
=> 23
Let the present age of Atif And Kayyum will be a and k
k + 10 = 2 * ( 10 + r )
=> k + 10 = 2 * 23
=> k = 46 -10
= 36.
Hence, Age of Atif = k / 6
=> 36 / 6
=> 6 years.

Let two years ago, the ages of Naresh and Suresh was 3X and 2X.

So one year hence, the ages of Naresh and Suresh would be 3X+3 and 2X+3 respectively.

As per question;

3x+3/2x+3=7/5

15X + 15= 14X + 21

X = 6

Present age of Naresh =3*6 + 2 = 20 years

Present age of Suresh = 2*6 + 2 = 14 years

∴Sum of their present ages = 20 + 14 = 34 years

Let 5 years age, the age of ashok, Anil and Ajay were 3x, 4x and 5x years. Then, their present ages are ( 3x + 5), (4x + 5) abd ( 5x + 5) years.
Now, 3x +5 + 4x +5 + 5x + 5 = 75 => 12x = 60 x = 5
Hence, present age of Anil = 4x + 5 = 4 x 5 + 5 = 25 years.

My brother was born 6 years after my sister was born and 3 years before I was born.
Age of father during my brother’s birth = (30 + 6) = 36 years.
Age of mother during my brother’s birth = (38 – 3) = 35 years.
Hence, during the birth of my brother, my father was 36 years old and my mother was 35 years old.

Let, Tanya age 16 years ago = x,
Grandfather’s age 16 years ago = 8x.

8 years from now, 3(x+16+8) = (8x+16+8)
=> x = 48/5

8 years ago Ratio was:
=> x + 8 / 8x + 8
=> 48 / 5 +( 8 ) / 8 * (48 / 5 ) + 8
=> 88 / 424
=> 11 / 53
the correct answer is 11 / 53=11:53

Let the present age of the father is 7X and present age of son is 2X.

As per question, ten years ago;

(7X – 10)+ (2X – 10) = 34

7X – 10 + 2X – 10= 34

9X = 34 + 20

9X = 54

X = 6

∴Present age of son = 2 * 6= 12 years