The mean of the numbers 20, 13, x, 14, 18, 16, 15, 12 is 16. Find the value of x.
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Answer:
18= (16+14+x+20+23) /5
18= (73+x) /5
(x+73) =18×5
x+73= 90
x=90-73
x= 17
x, is 17
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