A shopkeeper buys 120 articles at the same cost price each. He sells 30% of the articles at a 25% profit, 20% of the articles at a 20% profit and \(66 \frac{2}{\mathrm{3}} \%\) of the remaining at a 10% loss. He sells the remaining at a loss equal to the cost price of 5 articles. What is his profit percentage in the entire transaction?