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OpenStudy (anonymous):
The arithmetic mean of a set of 7 numbers is 84. After three of the numbers are dropped from the list, the average of the remaining numbers is 56. What is the average of the numbers that were dropped?
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OpenStudy (anonymous):
I worked this tonight http://openstudy.com/users/telliott99#/updates/50170ae7e4b04dfc808b43da
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