If the cost price of 15 articles is equal to the selling price of 20 articles, find the profit or loss percentage

If the cost price of 15 articles is equal to the selling price of 12 articles, find gain %

In the cost price of 20 articles is equal to the selling price of 15 articles then find the profit or loss percentage.

If the cost price of 20 articles is equal to the selling price of 15 articles, find the profit per cent.

If the cost price of 20 articles is equal to the selling price of 18 articles, then find the profit per cent.

The cost price of 10 articles is equal to the selling price of 9 articles. Find the profit percent.

The cost price of 10 articles is equal to the selling price of 9 articles. Find the profit percent.

The cost price of 10 articles is equal to the selling price of 9 articles. Find the profit percent.