The average (arithmetic mean) of 10, 20, and 60 is 5 more than the average of 10, 40, and what number?  Options.
A) 25	B) 60	C) 50	D) 30	E) 40
a1 = 90/3= 
<gadget id="calculator">90/3</gadget>
<output>30</output>
30   a2= a1 -5 = 25   sum of second list = 25*3= 
<gadget id="calculator">25*3</gadget>
<output>75</output>
75   therefore the number= 75 -50= 
<gadget id="calculator">75 -50</gadget>
<output>25</output>
25   25
<result>A</result>
The average (arithmetic mean) of 10, 20, and 60 is 5 more than the average of 10, 40, and what number?