Question

Rani, who is y years old at present, is x years older than Hamid. Fifteen years ago, Hamids's age was ¼ of the age of Rani. Which of the following is true ?
1) 3x-4y=45
2) 3y-4x=45
3) 2y-x=15
4) y/x-1=1/4

Answer 1

2)3y-4x=45.
let hamids age be a
y=x+a
a=y-x
a-15=1/4(y-15)
y-x-15=y/4-15/4

simplified 3y-4x=45