If the average of 10,11,12,13,14,15,16,17,18 and x is 23, what is the value of x? Choose the correct answer:
A) 90
B) 89
C) 123
D) x=104
E) 110
Given (10+11+12+13+14+ 15+16+17+18+x)/10=23   126+x/10= 23   126+x=230   x=230-126= 
<gadget id="calculator">230-126</gadget>
<output>104</output>
104   Answer is x=104
<result>D</result>
If the average of 10,11,12,13,14,15,16,17,18 and x is 23, what is the value of x?