Tax treatment for elss mf gains after 3 year lock in periodg

I invested 100000 in elss mf. After 3 year lock in was over i redeemed it for 150000. So my gain from redemption is 50000.

I have shown 500000 as my profit under 44ADA (51%) from my profession. My question is  

Is this 50000 gain  from mf added to 500000 from my profession and my tax is calculated on 550000 at regular tax slabs  ?

OR

IS THIS 50000 from mf  taxed at different rate and treated differently??

Also which itr is appropriate to file? (Income  from profession plus  gains from mutual fund sell)