Summer camp

Out of the 180 students at a summer camp, 72 signed up for canoeing. Twenty-three students signed up for trekking, and 13 also signed up for canoeing.

Use a two-way table to organize the information and answer the following question:

Approximately what percentage of students signed up for neither canoeing nor trekking?

Correct answer:

p =  54 %

Step-by-step explanation:

$$\begin{gathered} a=180-72-23+13=98 \\ b=180 \\ p=a/b\cdot 100=98/180\cdot 100=54\% \end{gathered}$$

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