A class of 30 students took a science test. 10 students had an average (arithmetic mean) score of 85. The other students had an average score of 70. What is the average score of the whole class?
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Home » Mathematics » A class of 30 students took a science test. 10 students had an average (arithmetic mean) score of 85. The other students had an average score of 70. What is the average score of the whole class?