Question

If the mean of 6,8,5,x and 4 is 7 , the value of x​

Answer 1

Answer:

12

Step-by-step explanation:

[6+8+5+4+x] ÷ 5 = 7

[23+x] ÷5 = 7

23+ x = 35

therefore, x= 35-23

x= 12

Answer 2

Answer :

The value of x is 12 .

Step by step explanation :

Given :

Mean of 6,8,5,x and 4 is 7 .

To find :

The value of x

Taken :

To find the value of x use the formula of how you can find the mean of any number .

Formula -:

$\boxed{\sf{\dfrac{Sum\:of\:all\:numbers}{Total\:numbers}=7}}$

Total amount of numbers in the question is 5 .

Solution :

$:\implies\sf{\dfrac{6+8+5+x+4}{5}=7}$

$:\implies\sf{\dfrac{14+5+x+4}{5}=7}$

$:\implies\sf{\dfrac{19+x+4}{5}=7}$

$:\implies\sf{\dfrac{23+x}{5}=7}$

Do the cross multiplication of 5 and 7 .

$:\implies\sf{23+x=35}$

$:\implies\sf{x=35-23}$

$:\implies\sf{x=12}$

So , the value if x is 12 ......