Question

20years from now neha will be three times as old as she is now. find her present age

Answer 1

hey!
let her age be x
then, x+20=3x
-2x=-20
x=10
so the present age of neha is 10

Answer 2

let here present age be X.

age after 20 years -- X + 20

A/q,

3X = X + 20

3X - X = 20

2X = 20

X = 10 year Ans.