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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?
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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?
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Feb 13, 2017
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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?
Mathematics
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Geoff Adams
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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
Ron Maupin
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Feb 15, 2017
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Hello,
(9*140-180)/8=147.5
================
Robert Petermeier
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Feb 20, 2017
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Robert Petermeier
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