The average (arithmetic mean) of eight numbers is 46.1. If the sum of half of these numbers is 158.4, what is the average of the other half? Pick.
A) 12.8	B) 24.2	C) 52.6	D) 72.1	E) 96.8
arithmetic mean = sum / total numbers   sum = 46.1 * 8= 
<gadget id="calculator">46.1 * 8</gadget>
<output>368.8</output>
368.8   sum of half of these numbers is 158.4. So, 4 numbers sum is 158.4. Rest 4 numbers sum= 368.8-158.4= 
<gadget id="calculator">368.8-158.4</gadget>
<output>210.4</output>
210.4   Arithmetic mean of the 4 nos= 210.4/4= 
<gadget id="calculator">210.4/4</gadget>
<output>52.6</output>
52.6   Hence, 52.6 is the answer.
<result>C</result>
The average (arithmetic mean) of eight numbers is 46.1. If the sum of half of these numbers is 158.4, what is the average of the other half?