The average of 6 no.'s is 6.40. The average of 2 of them is 6.2, while the average of the other 2 is 6.1. What is the average of the remaining 2 no's?
Answers.
A) 2.3
B) 2.6
C) 6.9
D) 4.5
E) 4.6
Sum of the remaining two numbers = (6.4 * 6) - [(6.2 * 2) + (6.1 * 2)]   = 38.40 - (12.4 + 12.2) = 38.40 - 24.6= 
<gadget id="calculator">38.40 - 24.6</gadget>
<output>13.8</output>
13.80   Required average= (13.8 / 2)= 
<gadget id="calculator">(13.8 / 2)</gadget>
<output>6.9</output>
6.9   Answer : 6.9
<result>C</result>
The average of 6 no.'s is 6.40. The average of 2 of them is 6.2, while the average of the other 2 is 6.1. What is the average of the remaining 2 no's?