Question

Pawan is twice as old as ruby .Three years ago ,he was three times as old as ruby .How old is Pawan now

Answer 1

let the present age of ruby is x year.
so pawans age is 2x.
a/q three years ago ruby age =(x-3)

three years ago pawan age =(2x-3)
a/q,3(x-3)=2x-3
3x-9=2x-3
x=6
ruby =6 years
pawan =12years

Answer 2

Let present age of Ruby be X year's.


Present age of Pawan = 2X year's.



Before 3 years age of Ruby = ( X - 3 ) year's.


Before 3 years age of Pawan = ( 2X - 3 ) year's.


According to question,



2X - 3 = 3 ( X - 3 )


2X - 3 = 3X - 9



3X - 2X = -3 + 9



X = 6 year's.


Present age of Ruby = X = 6 year's.


And,

Present age of Pawan = 2X = 12 year's.