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.

Explanation –

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

Explanation –

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

Explanation –

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

Explanation –

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

Explanation –

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

Explanation –

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

Explanation – 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

Explanation – 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.