Question

rekhas mother is four times as old as she is now in 20 years the mother will be twice as old as a her daughter
find a present age

Answer 1

Hey... I think this can be ur answer!!

Let the age of rekha be x and that of her mother be y
ATQ,
y=4x...(1)
Now,
y+20 = 2(x+20)
y=2x + 20..(2)

Substituting (1)in (2),
4x=2x+20
x=10yrs - age of rekha
y=4(10)=40yrs - age of her mother

Answer 2

hey mate!!
rekhas mother present. age - x
rekhas present age - y
therefore according to the question
x = 4y. eq (1)
in twenty years rekhas age will be y ➕ 20
rekhas mother age = x ➕ 20

therefor according to the question
x+20 = 2(y+20) eq (2)

now solve the equation 1 and 2 by any method an you will get the answers