Let the present age of P be 3x years.

So the present age of Q be 7x years.

Now, after 5 years, P's age = 3x + 5 years and Q's age = 7x + 5 years

So, according to question,

2(3x + 5) = 7x + 5

On solving this equation, we get

x = 5

So, the present age of P is 3x = 3 * 5 = 15 years.

Ram's present age = 32 years

Four years ago, Ram's age = 32 - 4 = 28 years

Four years ago, Laksham's age = 28 * 8/7 = 32 years

Now, present age of Laksham = 32 + 4 = 36 years

Let the present age of Amit be x years.

5 years hence, Amit's age = x + 5 years 

7 years back, Amit's age = x - 7 years 

Now, according to question,

x + 5 = 8/5(x - 7)

x = 27

So, the present age of Amit is 27 years.

Ten years ago, let Megha's age be x years. 

Then, Rekha's age = 2x + 10 years 

So, present age of Rekha = 2x + 10 + 10 = 2x + 20 years and present age of Megha = x + 10 years 

Now, six years hence, Rekha's age = 2x + 20 + 6 = 2x + 26 years and Megha's age = x + 10 + 6 = x + 16 years 

According to question,

2x + 26 + x + 16 = 78

x = 12

So, ten years ago, Megha's age = 12 years and Rekha's age = 2 x 12 + 10 = 34 years 

Now, present age of Rekha = 34 + 10 = 44 years and pressent age of Megha = 12 + 10 = 22 years

So, ratio of their present ages = 44 : 22 = 2 : 1

Let the present age of father be x years.

Then, present age of Akash = x - 30 years 

Four years ago, Akash's father's age = x - 4 years and Akash's age = x - 30 - 4 = x - 34 years

According to the question,

x - 34 = 2/5(x - 4)

x = 54

Akash's father's present age = 54 years 

So, father's age after 6 years = 54 + 6 = 60 years

Let the present age A be 4x years and that of B be 5x years. 

After 14 years, A's age = 4x + 14 years and B's age = 5x + 14 years

Now, according to question, 

(4x + 14)/(5x + 14) = 6/7

x = 7

Now, present age of A = 4 * 7 = 28 years and present age of B = 5 * 7 = 35 years

Age of A 5 years ago = 28 - 5 = 23 and B's age 5 years ago = 35 - 5 = 30 years

So, the difference of ages of A and B is 30 - 23 = 7 years.

Let the present age of son be x years.

Then, present age of father = 14x years

After 12 years, son's age = x + 12 years and father's age = 14x + 12 years 

Now, according to question,

20/7(x + 12) = 14x + 12

x = 2

So, present age of father = 14x = 14 * 2 = 28 years

Let the present age of father be x years and that of the son 86 - x years.

Five years ago, father's age = x - 5 years and son's age = (86 - x - 5) = 81 - x years

Now, according to question,

x - 5 = 2(81 - x) - 2

x = 55

So, present age of father = 55 years 

Therefore, present age of son = 86 - 55 = 31 years

Let the present age of father be x years.

Five years ago, father's age = x - 5 years

Now, according to question,

x - 5 = 30

x = 35 years

So, father's present age = 35 years

So, son's present age = 35 - 23 = 12 years 

Now, total age of father and son after 10 years = (35 + 10) + (12 + 10) = 67 years

Let the present age of the son be x years.

Then, present age of father = 2x + 2 years 

Now, after 7 years, son's age = x + 7 years and father's age = 2x + 2 + 7 = 2x + 9 years

Now, according to question, 

x + 7 + 2x + 9 = 121 

x = 35

So, present age of son = 35 years

Therefore, present age of father = 35 * 2 + 2 = 72 years

Let the present age of Rahul be x years.

Then, present age of Rakesh = x - 39 years 

So, present age of Anuj = x - 39 - 2 = x - 41 

Now, according to question,

x = 3(x - 39 + x - 41)

x = 48 years

Let x years ago, the ratio of the ages of Mohit and Lalit be 1 : 2.

So, (32 - x)/(56 - x) = 1/2

x = 8 years

Let the present age of father be x years. So, present age of son = 40 - x years Four years ago, age of father = x - 4 years and age of son = 40 - x - 4 = 36 - x years Now, according to question, x - 4 = 3(36 - x) On solving this equation, we get x = 28 years So, the present age of father is 28 years.

Let the present age of A be x years.

Then, present age of B = x - 5 years and that of C = 2(x - 5 - 2) = 2x - 14 years 

So, average of A, B and C = 59 years 

(x + x - 5 + 2x - 14)/3 = 59

x = 49

So, the present age of A is 49 years.

Then present age of B = 49 - 5 => 44 years 

Therefore B's age after 6 years = 44 + 6 => 50 years.

Let the present age of father be x years and that of the son be y years.

Then, 9 years ago, father's age = x - 9 and son's age = y - 9 years

So, according to question,

x - 9 = 4 (y - 9) 

x - 4y = -27 ------------------(1)

Now, 9 years hence, father's age = x + 9 years and son's age = y + 9 years

Again, x + 9 = 2(y + 9)

x - 2y = 9 -------------------------(2)

On solving the equations (1) and (2), we get

x = 45 and y = 18

So, the present age of father is 45 years.