SOLUTION: please help me solve this question, on averages and range : " a pupil has taken four exams and his mean score is 45%. In his next exam (his fifth exam) he only scores 20%. Find his

Question 1077356: please help me solve this question, on averages and range : " a pupil has taken four exams and his mean score is 45%. In his next exam (his fifth exam) he only scores 20%. Find his mean mark for all five exams. " thankyou..
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

So then,

and

Th new average is 40%.

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