mathematical problem with a twist !!!!!!!

Shilpa is 21 years older than her son raju.
In 6 years from now Shilpa will be 5 times as old as raju.

Question: Where's Shilpa's Husband ?

Of course answer me on rrbijlani@gmail.com.
Honourable mentions to persons giving the correct answer in 48 hours.
(And there is an answer to this one)
Regards,
RB.