In a 60-item exam, Liza got 90% of the items correctly. Her best friend, Rose, got 2 more correct answers than her. How many incorrect answers did Rose have? Let's be accurate as possible.
Liza got 60 x 90 / 100 = 54 of the items correctly. So, Rose got 54 + 2 = 56 of the items correctly. Thus, Rose had 60 - 56 = 4 incorrect answers.
The answer: 4.