Explanation-
Sum of ages is 360 years.The ratio of children and parents ages is 2:1.
Total age of parents = 360 x 1 / 3 = 120 years
Ratio of wife and husband age is 5:7. Therefore, the age of husband = 120 x 7 / 12 = 70
Hence the age of husband is 70 years.

Let A’s age and B’s age be 6X years and 7X years respectively
Then, 7X – 6X = 4
X = 4
Required ratio = (6X + 4) : (7X + 4) = (6*4+4) : (7*4 +4) =28 : 32 = 7 : 8

Sum of ages is 360 years.The ratio of children and parents ages is 2:1.
Total age of parents = 360 x 1 / 3 = 120 years
Ratio of wife and husband age is 5:7. Therefore, the age of husband = 120 x 7 / 12 = 70
Hence the age of husband is 70 years

Let Poonam age 6 years back = x.
Then, Sush age 6 years back = 3x.
(5/3) * (X + 6 + 6) = (3X + 6 + 6)
So 5(x+ 12) = 3(3x+ 12),
so x=6.
Poonam Age = (x+ 6) years = 12 years

Let the present ages of Simmi and Anu be 5x years and 4x years respectively
Then, [5X + 3] / [4X + 3] =11/9
x=6
Anu’s present age = 4X = 24 years

Let Anuj’s age be X
Gopal is 2 years younger than Mohan, so Gopal is 3 years (i.e 5 – 2 = 3)
If Arun had born 6 years before, his age would had been X – 6. As per the question, X – 6 should be 18 times as that of Gokul’s age.
i.e. (X – 6) /18= 3
X-6 =3 x 18
x = 60

Let Khush’s present age be x years and Sam’s present age be y years
Then, according to the first condition,
x – 10 = 3(y – 10)
or, x – 3y = -20 ……..(1)
Now. Khush’s age after 10 years = (x + 10) years
Sam’s age after 10 years = (y + 10)
(x+10) = 2(y+10)
or, x – 2y = 10 ……..(2)
Solving (1) and (2), we get
x = 70 and y = 30
Khush’s age = 70 years and Sam’s age = 30 years

Let Monit’s present age be X years. Then, father’s present age = (X + 3X) years = 4X years.
(4X + 8) =5/2 x (X + 8)
8X + 16 = 5X + 40
3X = 24 so, X=8
Hence, required ratio = (4X + 16) / (X + 16)=48 / 24 = 2

Let son’s present age be X years. Then, (38 – X) = X
2X = 38
X = 19
Son’s age 5 years back = (19 – 5) years = 14 years

Let one year ago
Sam’s age be 4X years
And, Ash’s age be 3X years
Present age of Sam = (4X + 1) years
Present age of Ash= (3X + 1) years
One year hence
Sam’s age = (4X + 2) years
Ash’s age = (3X + 2) years
According to question,
[4X + 2] divide by [3X + 2] = 5 / 4
16X + 8 = 15X + 10
or, X = 2
Sum of their present ages = 4X + 1 + 3X + 1
= 7X + 2
= 7 x 2 + 2 = 16 years.