From the following information, calculate ‘Return on Investment’ :
Shareholders Funds ₹ 16,00,000
10% Debentures ₹ 8,00,000
Current Liabilities ₹ 2,00,000
Current Assets ₹ 5,00,000
Non-Current Assets ₹ 21,00,000
Net profit after tax was ₹ 3,00,000 and the tax amounted to ₹ 1,00,000.