Question

Find the mean of x,x+3,x+6,x+7​

Answer 1

$\frac{x + x + 3 + x + 6 + x + 7}{4} \\ \ = \frac{4x + 16}{4} \\ = \frac{x + 16}{1} \: or \: \frac{4x + 4}{1} \\ = x + 16 \: or \: 4x + 4$

Hope it helps!

Answer 2

The mean of x , x + 3 , x + 6 , x + 7 is x + 4

Given :

The observations x , x + 3 , x + 6 , x + 7

To find :

The mean

Solution :

Step 1 of 3 :

Write down the given observations

The given observations are x , x + 3 , x + 6 , x + 7

Step 2 of 3 :

Find sum of the observations

Sum of the observations

= x + x + 3 + x + 6 + x + 7

= 4x + 16

Step 3 of 3 :

Find the mean

Hence the required mean

$\displaystyle \sf{ = \frac{4x + 16}{4} }$

$\displaystyle \sf{ = \frac{4(x + 4)}{4} }$

$\displaystyle \sf{ = (x + 4) }$

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