Question

The present age of a woman is 3 years more than three times the age of her daughter. Three years hence, the woman’s age will be 10 years more than twice the age of her daughter. Find their present ages.

Answer 1

Let the woman’s present age be x years.

Let her daughter’s present age be y years.

Then, we have:

x = 3y + 3

⇒ x – 3y = 3   ...(i)

After three years, we have:

(x + 3) = 2(y + 3) + 10

⇒ x + 3 = 2y + 6 + 10

⇒ x – 2y = 13   ...(ii)

Subtracting (ii) from (i), we get:

–y = (3 – 13)

–y = –10

⇒ y = 10

On substituting y = 10 in (i), we get:

x – 3 × 10 = 3

⇒ x – 30 = 3

⇒ x = (3 + 30)

⇒ x = 33

Hence, the woman’s present age is 33 years and her daughter’s present age is 10 years.