Question

every mean of 5 observation is x, x + 2, X + 4 x + 6 and x+8 it is 11 then find the value of x

Answer 1

(x+x+2+x+4+x+6+x+8)/5=11
=>(5x+20)=11*5
=>5x+20=55
=>5x=55-20
=>5x=35
=>x=35/5
=>x=7

Answer 2

Answer:

x = 7

Step-by-step explanation:

Find the sum of the 5 numbers:

mean = 11

Sum = 11 x 5 = 55

Find the sum of the 5 numbers in term of x:

Sum = x + ( x + 2) + (x + 4) + (x + 6) + (x + 8)

Sum = x + x + 2 + x + 4 + x + 6 + x + 8 = 5x + 20

Solve x:

5x + 20 = 55

5x = 35

x = 7

Answer: The value of x is 7