Question
A group of 7 pupils scores an average of 83 marks in a test. When a new pupil joins the group, their average score decreases to 75 marks. How many marks does the new pupil score?
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A group of 7 pupils scores an average of 83 marks in a test. When a new pupil joins the group, their average score decreases to 75 marks. How many marks does the new pupil score?