Answer:
The number of questions she answered incorrectly is;
[tex]2\text{ questions}[/tex]Explanation:
Given that Rani takes a 40 - question test.
And she answered 5% incorrectly.
It means that she answered 5% of 40 questions incorrectly.
Let us calculate 5% of 40;
[tex]\begin{gathered} n=\frac{5}{100}\times40 \\ n=2 \end{gathered}[/tex]So, the number of questions she answered incorrectly is;
[tex]2\text{ questions}[/tex]