What is the value of x if the mean of 21, 26, 49 and x is 32?
- A30
- B36
- C32
- D34
Solution & Step-by-step Explanation
The mean of a set of observations is the sum of observations divided by the total number of observations.
Mean=
4
21+26+49+x
Given that the mean is 32:
32=
4
96+x
32×4=96+x
128=96+x
x=128−96=32
Thus, the value of x is 32.
Mean=
4
21+26+49+x
Given that the mean is 32:
32=
4
96+x
32×4=96+x
128=96+x
x=128−96=32
Thus, the value of x is 32.