The average of five numbers is 27. If one number is excluded, the average becomes 20. The excluded number is?  Choose the correct choice from the following options.
A) 52 B) 53 C) 54 D) 55 E) 56
Excluded number = (27 * 5) - (20 * 4)   = 135 - 80= 
<gadget id="calculator">135 - 80</gadget>
<output>55</output>
55.   Answer: 55
<result>D</result>
The average of five numbers is 27. If one number is excluded, the average becomes 20. The excluded number is?