The average (arithmetic mean) of 20, 40, and 60 is 7 more than the average of 10, 70, and what number? Choose the correct choice from the following answers
A) 19  B) 25  C) 35  D) 45  E) 55
a1 = 120/3= 
<gadget id="calculator">120/3</gadget>
<output>40</output>
40   a2= a1 -7 = 33   sum of second list = 33*3= 
<gadget id="calculator">33*3</gadget>
<output>99</output>
99   therefore the number= 99 -80= 
<gadget id="calculator">99 -80</gadget>
<output>19</output>
19   19NSWER:19
<result>A</result>
The average (arithmetic mean) of 20, 40, and 60 is 7 more than the average of 10, 70, and what number?