Question

if the mean of 9,8,10,x,12 is 15.
find the value of x​

Answer 1

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x]

Answer 2

Answer:

=> The value of x = 36

Step-by-step explanation:

Given that:-

$9,8,10,x,12$

Mean is $15$,

To find:- The value of x,

Mean of the given numbers

$=> \frac{ (9 + 8 + 10 + x + 12)}{5}=\frac{(39+x)}{5}$

By further simplifying it, we get

Therefore,

$=> 39 + x = 15 \times 5$

Multiplying the numbers, we get

=> $39 + x = 75$

Subtract both sides by $39$, we get

=> $39 - 39 + x = 75 - 39$

=> $x = 36$

Hence, the value of x is 36.