If 12 years are added to 2/3 age of Rani ,she will be 3 years older then today.what is rani,s present age?

If 12 years are added to 2/3 age of Rani ,she will be 3 years older then today.what is rani,s present age?

a.25  
b.27  
c.29

Ans: b.27