Question
A group of 5 students scores an average of 90 marks in a test. When a new student joins the group, their average score decreases to 77 marks. How many marks does the new student score?
2 m

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A group of 5 students scores an average of 90 marks in a test. When a new student joins the group, their average score decreases to 77 marks. How many marks does the new student score?