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OpenStudy (anonymous):
An orchestra consists of 25 members. The youngest member is 32 years old. She leaves and is replaced by a new member who is 30 years old. By how much does the replacement change the average age of the members of the orchestra?
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Directrix (directrix):
We have just now worked this: http://openstudy.com/users/non008#/updates/51513785e4b0d02faf5be2e9
OpenStudy (anonymous):
yes! @Directrix
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