The cost price of a particular amount of articles is same as the number of articles.Selling price of the articles comes out to be 20.Over the whole transaction 25% is gained.What is X?15181620

The problem states that the cost price of a certain number of articles is the same as the number of articles. Let's denote this number as X. So, the cost price for X articles is X.

Next, it is given that the selling price of the articles is 20.

The problem also states that there is a gain of 25% over the whole transaction.

The formula to calculate the gain percentage is:

Gain% = (Selling Price - Cost Price) / Cost Price * 100%

We can substitute the given values into this formula:

25% = (20 - X) / X * 100%

Solving this equation for X will give us the number of articles.

Let's solve it:

25X = 20 - X 25X + X = 20 26X = 20 X = 20 / 26 X = 0.7692307692307692

However, the number of articles cannot be a fraction, so we round it up to the nearest whole number, which is 1.

So, X = 1.

This means that the number of articles is 1.