Question

Ravi obtained 70&75marks in first two unit test.Find the maximum marks he should get in the third test to have an average of at least 60 marks.

Answer 1

so...he should get a minimum of 35 marks

Answer 2

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Assume that x be the marks obtained by Ravi in the third unit test.

It is given that the student should have an average of at least 60 marks.

From the given information, we can write the linear inequality as:

(70+75+x)/3 ≥ 60

Now, simplify the expression:

⇒ (145 +x) ≥ 180

⇒ x ≥ 180 -145

⇒ x ≥ 35

Hence, the student should obtain a minimum of 35 marks to have a average of at least 60 marks

Hope It's Helpful....:)