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Mathematics, 18.06.2020 22:57 719729
In a class of twenty students, 6 have an average of 40%, 8 have an average of 50%, while the other 6 have an average of 60%. What is the average score for the whole class?
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In a class of twenty students, 6 have an average of 40%, 8 have an average of 50%, while the other 6...
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