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14-06-2016
Mathematics

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the average of 9 numbers is 140. One of the numbers is 180. What is the average of the other 8 numbers?

Respuesta :

14-06-2016

Hello,

(9*140-180)/8=147.5
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jillibeanerina jillibeanerina

14-06-2016

The answer is 135.
You can assume that all the other numbers are the same. So (8x + 180)/9 = 140. Isolate x to get 135. Then that is the average because if you had 8(135)/8 it would just be 135

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