Question

The mean of the following observations, 20,10,35,x, and 40 is 30. Then the value of x is A) 45 B) 50 C) 40 D) 35. PLEASE HELP ME FAST ​

Answer 1

Answer:

35 that is option D

Step-by-step explanation:

Given data is: 45,35,20,30,15,25,40.

We know, Mean is given by,

Therefore, option D is correct.

Answer 2

Answer:

Given data is: 45,35,20,30,15,25,40.

We know, Mean is given by,

Mean= Sum of the elements / Total number of elements

Here, number of observations =7.

⟹Mean= 45+35+20+30+15+25+40

7

= 210/7

=30.