a group of pupils take a test. the group consists of 18 boys and 28 girls. the mean mark for the boys is 25. the mean mark for the girls is 22. calculate the mean mark for the whole group. give your answer - QAmmunity.org

a group of pupils take a test. the group consists of 18 boys and 28 girls. the mean mark for the boys is 25. the mean mark for the girls is 22. calculate the mean mark for the whole group. give your answer

asked May 24, 2024 123k views

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