12, 10, x, 8
The median of the list of positive integers above is 9. Which of the following could be the average (arithmetic mean) of the list? Options.
A) 3	B) 5.5	C) 6.25	D) 7	E) 9
GivenThe median of the list of positive integers above is 9   So arranging the numbers from lowest to highest, avg of 2 middle terms needs to be 9   so the sequence will be x 8 10 12   Lets say x = 6, which gives us mean = sum/4 = 9   9 is correct
<result>E</result>
12, 10, x, 8
The median of the list of positive integers above is 9. Which of the following could be the average (arithmetic mean) of the list?