What happens if cost price = selling price?

What happens if cost price is selling price? Do we get any such situations in our daily life? It is easy to find profit % or loss % in the above situations. But it will be more meaningful if we express them in percentages. Profit % is an example of increase percent of cost price and loss % is an example of decrease percent of cost price.

If the profit is 20%, then what will be the ratio of cost price to selling price respectively?

Profit = Cost price - Selling price

The cost price of an article is 40% of the selling price. What percent of the cost price is the selling price?

The cost price of an article is 40% of the selling price. What per cent of the cost price is the selling price?

What was the per cent profit/loss earned incurred by selling an article for ? 24000? I. The ratio of the selling price to the cost price of the article is 5 : 3 II. The difference between the cost price and the selling price is ? .