Question

The mean of 5,10,x+1,2x+1,2x-3,x+6, is 20.Find the value of x.​

Answer 1

Given mean of 7,9,x+3,12,2x−1,3 is 9

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e.,

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 6

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21⇒x=

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21⇒x= 3

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21⇒x= 321

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21⇒x= 321

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21⇒x= 321 =7

Given mean of 7,9,x+3,12,2x−1,3 is 9i.e., 67+9+x+3+12+2x−1+3 =9⇒3x+33=54⇒3x=21⇒x= 321 =7∴ value of x=7

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Answer 2

Answer:

Given mean of 7,9,x+3,12,2x−1,3 is 9

i.e.,

6

7+9+x+3+12+2x−1+3

=9

⇒3x+33=54

⇒3x=21

⇒x=

3

21

=7

∴ value of x=7

Step-by-step explanation:

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