Question

Reena is 6 years older than her brother ajay.if the sum of their ages is 28 years,what are their present ages

Answer 1

Let ajay's age be x, then Reena's age will be x+6.
Now ATQ, x+(x+6)=28
So, 2x+6=28
2x=22
x=11
Therefore Ajay's age is 11 years and that of Reena will be 17 (11+6) years.

Answer 2

let ajay's age be 'x'
then reena's age will be 'x+6'
.: ATP:-
x+(x+6)=28
=>x+x+6=28
=>2x+6=28
=>2x=28-6=22
=>[x=22÷2=11]
.: ajay's age= x= 11
reena's age= (x+6)= (11+6)= 17