Calculation of Selling price from Profit percentage

Calculation of Selling price from Loss percentage

Calculation of cost price from Profit percentage

When calculated over the selling price the profit percentage on selling an article is 25% . What is the actual profit percentage ?

If profit is 1/ 9^(th) of selling price, then what is the profit percentage?

If cost price is ₹4500 and selling price is ₹5000 then find profit percentage.