Question

The marks obtained by a student of class 11th in first and second terminal examination are 62 and 48, respectively. Find the minimum marks he should get in the annual examination to have an average of at least 60 marks.​

Answer 1

Answer:

Let x be the marks obtained by student in the annual examination .

Then

62+48+x/3 >_ 60

⇒110+x≥180

⇒x≥70

Thus ,the student must obtain a minimum of 70 marks to get an average of at least 60 marks