 Hi and welcome to the session. I am Priyanka and let us discuss the following question. Say Ravi obtained 70 and 75 marks in first two unit tests. Find the number of minimum marks he should get in the third test to have an average of at least 60 marks. Now let us proceed on with our solution. In this question we will be first of all converting the given condition into an inequality taken into consideration the things that are given to us. Marks obtained in first two unit tests are 70 and 75 marks. That on totaling gives us 145 marks. Now let the marks obtained by him in third unit test be equal to x marks. Right? So his average marks will be 145 plus x divided by total unit test over 3. Right? Now by the condition given to us, it is given to us in the question that average should be at least 60 marks. That means he should get 60 or more than 60 marks as his average. So here we have 145 plus x divided by 3 should be greater than or equal to 60. Right? So this is the inequality which is formed by us. We need to solve this inequality to get the required value of x. So on multiplying both the sides by 3 we have 145 plus x is greater than equal to 180. Subtracting 145 from both the sides we have the value of x is greater than equal to 35. That means the marks obtained by him in third unit test is more than or equal to 35. Right? So this completes the question that was given to us. I hope you enjoyed and remember how to form the inequality taking into consideration all the conditions given to us by me.