Question
The average mass of a group of 12 students is 34 kg and the average mass of another group of 18 students is 37 kg. What is the average mass of the two groups of students?
3 m

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The average mass of a group of 12 students is 34 kg and the average mass of another group of 18 students is 37 kg. What is the average mass of the two groups of students?