Question

if the average of 11and23and x is 40 then x equal to​

Answer 1

average is 40

11+23+x/3=40

34+x=120

x=120-34

x=86

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Answer 2

Sum of the observations/total no. of observations= average

It is given that average is 40

Therefore,

X+11+23/3=40

X+34=40×3

X+34=120

X=120-34

=86