amit scored 35 and 40 marks in two unit tests for mathematics out of 50. to become his average mark after 3 units test as 38, how much marks he has to score for the 3rd test?
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Answer:
Let x be the marks obtained by Ravi in the third unit test.
Since the student should have an average of at least 60 marks.
3
70+75+x
≥60
⇒145+x≥180
⇒x≥180−145
⇒x≥35
Thus the student must obtain a minimum of 35 marks to have an average of at least 60 marks.
Step-by-step explanation:
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