Question

Ravi obtained 70 and 75 marks in first unit test. Find tje minimum marks he should get in 3rd test to have an average of least 60 marks

Answer 1

let ravi get x marks in third unit test

(70+75+x)/3 >= 60

145 +x >= 180

x >= 35 (180-145)

the minimum marks he should get in third unit test is 35

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....:)