Question

five years ago arman's uncle was three times as old as arman . ten years from now his uncle will be twice as old as arman. what are the present ages of arman and his uncle ????
( please explain )

Answer 1

let arman's age =y
let arman's uncle age =x
five years back
Uncle sal three times as old as Armaan
so ATQ
x-5=3(y-5)
the eq.will be
x-3y=-10
now ten years from now
uncle will be twice as old arman .
so ATQ
x+10=2(y+10)
eq will be
x-2y=10
by using elimination
x=50,y=20