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snow_lady [41]
3 years ago
5

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

Mathematics
2 answers:
Murrr4er [49]3 years ago
7 0
Let the unknown number be x.
as the average of the four numbers is 8
⇒ (22 + x)/4 = 8
⇒22 + x = 32
⇒x = 10

MakcuM [25]3 years ago
4 0
The 4th number is 10, since you need to add 10 to get 32 so that when you divide by 4 you get 8
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