Question

Shriya is twice old as Arjun. Five years ago her age was three times Arjun's age. Find their present ages.

Answer 1

Let us assume x and y to be shreya's and arjun ' s age respectively

x=2y
x-5=3 (y-5)
solving these equations we get y=10 & x=20
thus shreyas present age is 20 years and arjun present age is 10 years

Answer 2

let age of shriya be x and of other be y

given

2y=x

and

3(x-5) = y-5
 
3x-15=y-5 
 
put x=2y

6y-y=10

y=2
and
x=4