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Daisyzuniga123
Daisyzuniga123 Daisyzuniga123
  • 12-02-2015
  • Mathematics
Answered

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

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 12-02-2015

x+y+z=22

(x+y+z+t)/4=8
subsitute
x+y+z=22
(22+t)/4=8
multiplly by 4
22+t=32
subtract 22
t=10

the fourth number is 10

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