Question

if the mean of observation 20,42,35,45and x is 37 find the value of x
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Answer 1

Answer:

$\green{mean=20+42+35+45+x/5=37}$

$\green{142+x/5=37}$

$\green{145+x=185}$

$\green{x=185-145}$

$\large{x=40}$