Maths exam

One-third of all high school students passed the math exam. Five of these students failed the math exam. One-quarter of all students in the high school graduating class passed the math exam.
Calculate how many students there were in the high school graduating class.

Correct answer:

n =  60

Step-by-step explanation:

$$\begin{gathered} \frac{n}{3}-5=\frac{n}{4} \\ n/3-5=n/4 \\ n=60 \\ n=\frac{60}{1}=60 \\ n=60 \end{gathered}$$

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