tomiisthebest tomiisthebest

17-07-2017
Mathematics

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The mean of seven numbers is 12.0. When one new number is added , the average of eight numbers becomes 12.5 . What is the new number?

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Аноним Аноним

17-07-2017

(12 * 7 + n)8=12.5
(12 * 7 + n)= 100
N= 16. The new number will be 16. Hope this helps. :)

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ajloveshunter1234 ajloveshunter1234

17-07-2017

I agree that the answer is 16. Just plugging the number into a equation equaled to 100

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