Question

If the mean of x, x + 1,x+3, x + 4 and x + 7 is 25, find the value of x.​

Answer 1

$\sf{ \bold{mean = \frac{sum \: of \: all \: observations}{total \: number \: of \: observations} }}$

$25= \sf{ \bold{ \frac{(x) + (x + 1) + (x + 3) + (x + 4) + (x + 7)}{5} }}$

$25 = \bold{ \frac{5x + 15}{5} }$

$\implies \: 25 \times 5 = 5x + 15$

$\implies \: 125 = 5x + 15$

$\implies \: 5x = 110$

$\therefore \boxed{ \large{x = 22}}$

Answer 2

Answer:

22..........

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answer....

Step-by-step explanation:

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