Question

13. The age of the father is twice the sum of the ages of his two children. After 20 years, ts
age will be equal to the sum of the ages of his children. Find the age of the father.
[NCERT EXEMPLAR​

Answer 1

Answer:

Let the sum of the ages of two children will be x and age of father will be y.

A.T.Q. ,  

y = 2x                                              ----------(i)

and , After 20 years,

x+40=y+20  

==> x-y= -20

put y = 2x from (i),

x-2x = -20

==> x = 20

Now, put x= 20 in (i),

y = 2 x 20 = 40

Hence age of father will be 40 years.

Step-by-step explanation: