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Mathematics 14 Online
OpenStudy (anonymous):

The average of 100 measurements is 23 and the average of 50 additional measurements is 27. Which quantity is larger? A. the average of 150 measurements B. 25

OpenStudy (hoblos):

the average of the 150 measurements is (23*100 + 27*50)/150 =24.333 so which quantity is larger?

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