 Hello and welcome to the session. In this session we will discuss the following question and the question says, find the cost price of an article which is sold at a profit of 10% for 2200 dollars. Let's start the solution now. First we will do an assumption. Let the cost price is equal to 100 dollars. We are given that profit is 10%. So now we will calculate the profit for this cost price which is 100 dollars. So we get profit is equal to 10% of the cost price which is 100 dollars. This is equal to 10 upon 100 into 100 dollars. Zeros get cancelled and this is equal to 10 dollars. So therefore, selling price at a profit of 10% is equal to the cost price which is 100 dollars plus the profit which is 10 dollars and this is equal to 110 dollars. So we can say that if selling price is 110 dollars then cost price is equal to 100 dollars. Now we are given the question that the selling price is 2200 dollars and we have to find the cost price. So therefore if selling price is 2200 dollars then cost price is equal to 100 upon 110 into 2200 dollars. Zeros get cancelled and 11200 times is 2200. This is equal to 2000 dollars. So the final answer is cost price is equal to 2000 dollars. With this we end our session. Hope you enjoyed the session.