Question

Three years ago, Gulshan was 5 years older than his sister Diyva was then. If he now twice as old as she is, find their present ages.

Answer 1

hye

================================

let gulsan be x and his sister be y

now gulsan is twice old as his sister

=> x = 2y

=>
Three years ago, Gulshan was 5 years older than his sister Diyva was then

=> 5+y-5 = x-5

=>5+y-5 = 2y -5

=> 0 +y = 2y -5

=> 0-5 = -y+2y

=>-5 = y

age cant be negative so her sister is 5 years

gulsan = 2y

 =>2*5 = 10

gulsna = 10:sister =5

=============================

hope it helps u...............