Average of five numbers is 12. If one number is excluded the average becomes 10. The excluded number is  Pick
A) 35	B) 20	C) 40	D) 30	E) 67
Explanation:   Number is (5*12) - (4*10) = 60-40= 
<gadget id="calculator">60-40</gadget>
<output>20</output>
20   Answer: Option 20
<result>B</result>
Average of five numbers is 12. If one number is excluded the average becomes 10. The excluded number is