Question

father's age is three times the sum of age of his two children after 5years his age will be twice the sum of ages of two children find the age of father

Answer 1

x+5=3x+5
5-5=3x-x
0=2x
0/2=x
so x=0

Answer 2

Answer:

Step-by-step explanation:

let fathers age = x years

sum of ages of two children = y years

fathers age = 3* (sum of ages of two children)

x = 3y      ----eq 1

after 5 years

fathers age = 2 * (sum of ages of two children)

x+5 =2(y+10)

x+5 = 2y + 20

x-2y =15     ------eq 2

putting x=3 from eq 1 in eq 2

3y - 2y = 15

y=15

and x=3y

x= 3 * 15

= 45

x= 45 years (fathers age)