Question

The mean of 3, x, x+5 and 4 is 5. Find the value of x.

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

$\huge{\mathcal{\green{Answer}}}$

✔ Mean = sum of all observations/number of all observations

$\large{5=3+x+x+5+4/4}$

$\large{5=12+2x/4}$

$\large{20=12+2x}$

$\large{20-12=2x}$

$\large{8=2x}$

$\large{8/2=x}$

$\huge{\mathcal{\orange{\boxed{x=4}}}}$