The average (arithmetic mean) of 20, 40, and 60 is 5 more than the average of 20, 60, and what number? Select:
A) 25	B) 30	C) 35	D) 40	E) 45
a1 = 120/3= 
<gadget id="calculator">120/3</gadget>
<output>40</output>
40   a2= a1 -5 = 35   sum of second list = 35*3= 
<gadget id="calculator">35*3</gadget>
<output>105</output>
105   therefore the number= 105 -80= 
<gadget id="calculator">105 -80</gadget>
<output>25</output>
25   25
<result>A</result>
The average (arithmetic mean) of 20, 40, and 60 is 5 more than the average of 20, 60, and what number?