Accounting of goodwill in consolidated financial statements

Dear All, In my case, Company H Ltd has acquired shares 100% shares of Company S Ltd during the FY 2015-16. On the date of Acquisition, S Ltd had Negative Net worth of Rs. (15 Lakhs). H Ltd has paid Rs. 5 Lakhs to old shareholders. Please tell in this case how much goodwill i have to recognize in consolidated financial statements? Whether it will be Rs. 5 lakhs or Rs. 20 lakhs or any other amount?