Question

Problem Description - 6/6
Four-times the age of a mother is equal to nine-times the age of her daughter. After nine years, the mother's age will be twice her daughter's age Whats
of the daughter?
Options
36 years
32 years
28 years
39 years​

Answer 1

Answer:

Let mother age = x years

Let daughter age = y years

ATQ,

4x = 9y--- (i)

also,

after 9 years,

x + 9 = 2(y + 9)

=> x- 2y = 9

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

Substituting (ii) in (i)

4(9+2y) = 9y

36 + 8y = 9y

y = 36 years

therefore, option (A) 36 years is correct

Step-by-step explanation: