Seudónimo Seudónimo

23-07-2014
Mathematics

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Three of four numbers have a sum of 22. If the average of the four numbers is 8, what is the fourth number?

Respuesta :

17-08-2014

[tex]a+b+c=22\\ \\ \frac{a+b+c+x}{4}=8\\ \\ a+b+c+x=32\\ \\ 22+x=32\\ \\ \boxed{x=10}[/tex]

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