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The average of 10 numbers is 85. If the numbers 70, 76, and 77 are removed from the set of numbers, what is the average of the remaining numbers?

 Apr 2, 2022
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If the average (mean) of 10 numbers is 85, then the sum of the numbers is 10 x 85  =  850.

 

Removing the numbers 70, 76, and 77, we get:  850 - 70 - 76 - 77  =  627.

 

There are now 7 numbers remaining, so the average of these 7 numbers is 627 / 7  =  89.57...

 Apr 3, 2022

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