Sana and Rajesh were partners in a firm sharing profits and losses in the ratio of 4:3. They admitted Sonu into partnership for 1/5th share in the profits of the firm. Goodwill of the firm was to be valued at three years purchase of super-profits. Average net profit of the firm was ₹80,000. Capital employed in the business was ₹2,00,000 and normal rate of return was 10%. Calculate the amount of goodwill premium brought by Sonu. 

Marks-3, CBSE: 2024-25/Zone-7/Set-1/Q-18*