Johnny bought six peanut butter cans at an average price (arithmetic mean) of 38.0¢. If Johnny returned two cans to the retailer, and the average price of the remaining cans was 31¢, then what is the average price, in cents, of the two returned peanut butter cans?
Choose one:  A) 5.5  B) 11  C) 52  D) 66  E) 67.5
Total price of six cans = 6*38.0= 
<gadget id="calculator">6*38.0</gadget>
<output>228</output>
228   Total price of 4 cans= 4*31= 
<gadget id="calculator">4*31</gadget>
<output>124</output>
124   Total rice of two cans= 228 - 124= 
<gadget id="calculator">228 - 124</gadget>
<output>104</output>
104   Average price of two cans= 104/2= 
<gadget id="calculator">104/2</gadget>
<output>52</output>
52 c   Another way to do it is this:   Assume that the four leftover cans were of 31c each. The avg was 38c initially because the two cans were 38c each and were providing another 7c of cost to other 4 cans.   So cost of the two cans= 2*38 + 4*7= 
<gadget id="calculator">2*38 + 4*7</gadget>
<output>104</output>
104   Avg cost of the two cans= 104/2= 
<gadget id="calculator">104/2</gadget>
<output>52</output>
52c   Answer (52)
<result>C</result>
Johnny bought six peanut butter cans at an average price (arithmetic mean) of 38.0¢. If Johnny returned two cans to the retailer, and the average price of the remaining cans was 31¢, then what is the average price, in cents, of the two returned peanut butter cans?