The average of 11 numbers is 9.6. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is?	Choose the correct answer:
A) 9.5 B) 10 C) 10.5 D) 11.5 E) 25.8
25.8xplanation:   1 to 11 = 11 * 9.6= 
<gadget id="calculator">11 * 9.6</gadget>
<output>105.6</output>
105.6   1 to 6= 6 * 10.5= 
<gadget id="calculator">6 * 10.5</gadget>
<output>63</output>
63   6 to 11= 6 * 11.4= 
<gadget id="calculator">6 * 11.4</gadget>
<output>68.4</output>
68.4   63 + 68.4= 
<gadget id="calculator">63 + 68.4</gadget>
<output>131.4</output>
131.4 – 105.6= 25.8   6th number = 25.8   Option 25.8
<result>E</result>
The average of 11 numbers is 9.6. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is?