a list of measurements in increasing order is 4,5,6,8,10, x if the medium of these measurements is 6/7 times their arithmetic mean . what is x?
ans 16
please explain
ans 16
please explain
I remember this question. The answer choices, i think, were all greater than 10.
Hence x cannot be the median.
Hence the median is ( 6+8 )/2 = 7
Now, 7 = 6/7 [(4+5+6+8+10+x)/6]
Solving the above equation, you get x = 16
