###Human: Sylvia had one-fifth of incorrect answers in the exam, while Sergio got 4 mistakes. If there were 50 questions, how many more correct answers does Sergio have than Sylvia?, ### Assistant: Sylvia got 50/5 = 10 incorrect answers.
This means she got 50 - 10 = 40 correct answers.
Sergio got 50 - 4 = 46 correct answers.
So, Sergio got 46 - 40 = 6 more correct answers than Sylvia. 
 So the answer is :  6