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The mean of eight numbers is 83. the mean of another four numbers is 14. find the mean of the combined set of numbers.
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The mean of eight numbers is 83. the mean of another four numbers is 14. find the mean of the combined set of numbers.

User Anthony Granger
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total numbers =8+4=12

mean= (83*8+14*4)/(8+4)
mean= (664+56)/(12) = (720)/(12) =60
User Patrick Gunderson
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