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?
Liza got 60 x 90/100 = 
<gadget id="calculator">60*90/100</gadget>
<output>54</output>
54 of the items correctly.
So, Rose got 54 + 2 = 
<gadget id="calculator">54+2</gadget>
<output>56</output>
56 of the items correctly.
Thus, Rose had 60 - 56 = 
<gadget id="calculator">60-56</gadget>
<output>4</output>
4 incorrect answers.

<result>4</result>