Question

Rani, who is y years old at present, is x years
older than Hamid. Fifteen years ago, Hamid's
age was of the age of Rani. Which of the
following is true ?
(1) 3x – 4y = 45
(2) 3y - 4x = 45
2y - x = 15
72 - 15 = 1/4​

Answer 1

Step-by-step explanation:

Let the present age of rani be x years and hamid be h years.

Then,

y = h + x

h = y - x

Now,

(h - 15) = (x - 15) * (1/4)

4(h - 15) = x - 15

4(y - x - 15) = x - 15

3y - 4x = 45