Answer:
They both aren't born yet. Ravi is -54 years old, and Gaurav is -18 years old.
Explanation:
r=3g
r+18=2g
Substitute 3g for r
3g+18=2g
18=-1g
-18=g
r=(-18)*3=-54
This one strikes me as an odd one, but my working is correct, you can see that for yourself. Hope this helps and please tell me if this was the correct answer.