Ravi sold 16 pens at the cost of 20 pens. What is the profit or loss percentage made by him?Options25% loss4% loss4% profit25% profit

The problem can be solved in the following steps:

Step 1: Understand the problem Ravi sold 16 pens for the price of 20 pens. This means he received more money than the cost of 16 pens.

Step 2: Calculate the profit The profit is the difference between the selling price and the cost price. In this case, the selling price is the cost of 20 pens and the cost price is the cost of 16 pens. So, the profit is the cost of 20 pens - the cost of 16 pens = cost of 4 pens.

Step 3: Calculate the profit percentage The profit percentage is calculated as (Profit / Cost price) * 100. In this case, the profit is the cost of 4 pens and the cost price is the cost of 16 pens. So, the profit percentage is (cost of 4 pens / cost of 16 pens) * 100 = 25%.

So, Ravi made a profit of 25%. The correct option is "25% profit".