the average of 5 numbers id 27 . if one number is excluded , the average becomes 25 . the excluded number is	Choose the correct option
A) 25 B) 27 C) 30 D) 35 E) none

Rationale: solution excluded number = ( 27 x 5 ) - ( 25 x 4 ) = 135 - 100 = 35 . answer d
Answer: D