If the average of 54, 55, 57, 58, 59, 62, 62, 63, 65 and x is 60, what is the value of x?  Choose the most appropriate option
A) 60
B) 62
C) 64
D) 65
E) 66
Sum of the deviations of the numbers in the set from the mean is always zero   54, 55, 57, 58, 59, 62, 62, 63, 65   mean is 60   so the list is -6-5-3-2-1+2+2+3+5... this shud total to zero   but this is -5 , hence we need a number that is 5 more than the mean to get a +5 and make it zero   hence the answer is  60 + 5= 
<gadget id="calculator"> 60 + 5</gadget>
<output>65</output>
65   65
<result>D</result>
If the average of 54, 55, 57, 58, 59, 62, 62, 63, 65 and x is 60, what is the value of x?