Gce Model Questions Vol1 2017 Mathematics Question 20
Practice objective / multiple choice question 20 from the 2017 Gce Model Questions Vol1 Mathematics examination.
Class A has 20 students with a mean score of 68. Class B has 20 students with a mean score of 76, so the overall mean of the 40 students is 72. After a retest, each of the five lowest‑scoring students in class B improves by the same number of marks, and as a result the overall mean rises to 73. It is also known that after the improvement each of those five students has a score equal to the original overall mean (72). Find the original mean score of those five students.
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About This Question
This is Gce Model Questions Vol1 2017 Mathematics Question 20. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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