Question

if the Arthimetic mean of 5,4,x, x+3, 9 and 8 is 6 . find out value of x ​

Answer 1

Answer:

arithmetic mean=6

5+4+x+x+3+9+8 /6= 6

2x + 29= 36

2x= 7

X= 7/2

Answer 2

Answer:

arithmetic mean is 6

and, arithmetic mean =sum of all observations/no.of observations

so, 6=5+4+x+x+3+9+8/6

6=29+2x/6

6*6=29+2x

36-29=2x

7=2x

x=7/2