The average of five numbers id 28. If one number is excluded, the average becomes 25. What is the excluded number?
Options.
A) 30	B) 40	C) 32.5	D) 35	E) 37
Explanation:   Sum of 5 numbers = 5 × 28   Sum of 4 numbers after excluding one number = 4 × 25   Excluded number   = 5 × 28 - 4 × 25   = 140 - 100= 
<gadget id="calculator">140 - 100</gadget>
<output>40</output>
40   Answer: Option 40
<result>B</result>
The average of five numbers id 28. If one number is excluded, the average becomes 25. What is the excluded number?