A list of measurements in increasing order is 2, 5, 6, 8, 15 and x. If the median of these measurements is 3/4 times their arithmetic mean, what is the value of x?  Pick one:
A) 16  B) 18  C) 20  D) 22  E) 24
The median is (6+8)/2= 
<gadget id="calculator">(6+8)/2</gadget>
<output>7</output>
7   The mean is (2+5+6+8+15+x)/6= (36+x)/6   (36+x) /6 * 3/4 = 7   x = 56-36= 
<gadget id="calculator">56-36</gadget>
<output>20</output>
20   The answer is 20.
<result>C</result>
A list of measurements in increasing order is 2, 5, 6, 8, 15 and x. If the median of these measurements is 3/4 times their arithmetic mean, what is the value of x?